Security Affairs

AUGUST 31, 2023

Cisco is aware of attacks conducted by Akira ransomware threat actors targeting Cisco ASA VPNs that are not configured for multi-factor authentication. “This highlights the importance of enabling multi-factor authentication (MFA) in VPN implementations. . ” reads a post published by Cisco PSIRT.

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Authentication Ransomware VPN Hacking 138

Security Affairs

OCTOBER 9, 2023

IBM observed a credential harvesting campaign that is targeting Citrix NetScaler gateways affected by the CVE-2023-3519 vulnerability. IBM’s X-Force researchers reported that threat actors are conducting a large-scale credential harvesting campaign exploiting the recent CVE-2023-3519 vulnerability (CVSS score: 9.8)

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VPN Authentication Cyber Attacks Hacking 135

Security Affairs

JANUARY 16, 2024

Experts warn that recently disclosed Ivanti Connect Secure VPN and Policy Secure vulnerabilities are massively exploited in the wild. The flaw CVE-2023-46805 (CVSS score 8.2) is an Authentication Bypass issue that resides in the web component of Ivanti ICS 9.x, The flaw CVE-2023-46805 (CVSS score 8.2)

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Security Affairs

SEPTEMBER 28, 2023

Cisco released security updates for an actively exploited zero-day flaw (CVE-2023-20109) that resides in the GET VPN feature of IOS and IOS XE software. The vulnerability resides in the Group Encrypted Transport VPN (GET VPN) feature of IOS and IOS XE. ” reads the advisory published by the IT giant.

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Security Affairs

JANUARY 31, 2024

Threat actors are exploiting recently disclosed zero-day flaws in Ivanti Connect Secure (ICS) VPN devices to deliver KrustyLoader. The flaw CVE-2023-46805 (CVSS score 8.2) is an Authentication Bypass issue that resides in the web component of Ivanti ICS 9.x, x and Ivanti Policy Secure. x) and Ivanti Policy Secure.

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VPN Malware Authentication Small Business 129

Krebs on Security

JUNE 15, 2023

The directive applies to any networking devices — such as firewalls, routers and load balancers — that allow remote authentication or administration. The researchers found that just being able to reach the management interface for a vulnerable Fortinet SSL VPN appliance was enough to completely compromise the devices.

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Risk VPN Internet Internet 279

Security Affairs

OCTOBER 25, 2023

Citrix warned of attacks actively exploiting the vulnerability CVE-2023-4966 in NetScaler ADC and Gateway appliances. Citrix is urging administrators to secure all NetScaler ADC and Gateway appliances against the CVE-2023-4966 vulnerability, which is actively exploited in attacks. reported Citrix. reported Citrix. NetScaler ADC 13.1-FIPS

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Authentication VPN Hacking Government 136

Security Affairs

MAY 1, 2025

SonicWall revealed that attackers actively exploited two security vulnerabilities, tracked as CVE-2023-44221 and CVE-2024-38475 , in its SMA100 Secure Mobile Access appliances. The company addressed the flaws with the following releases: CVE-2023-44221 – 10.2.1.10-62sv

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Firmware Mobile Authentication VPN 69

Security Affairs

FEBRUARY 1, 2024

Mandiant spotted new malware used by a China-linked threat actor UNC5221 targeting Ivanti Connect Secure VPN and Policy Secure devices. Mandiant researchers discovered new malware employed by a China-linked APT group known as UNC5221 and other threat groups targeting Ivanti Connect Secure VPN and Policy Secure devices.

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VPN Malware Authentication Hacking 137

Security Affairs

OCTOBER 18, 2023

Experts reported that the vulnerability CVE-2023-4966 in Citrix NetScaler ADC/Gateway devices has been exploited in attacks since late August. On October 10, Citrix published a security bulletin related to a critical vulnerability, tracked as CVE-2023-4966, in Citrix NetScaler ADC/Gateway devices. ” reported Citrix.

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Authentication VPN Hacking Government 134

Security Affairs

MAY 2, 2025

An attacker can exploit the flaw to map URLs to file system locations that are permitted to be served by the server CVE-2023-44221 (CVSS score: 7.2) is an improper neutralization of special elements in the SMA100 SSL-VPN management interface. The company addressed the flaws with the following releases: CVE-2023-44221 10.2.1.10-62sv

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Firmware Authentication VPN Mobile 71

The Hacker News

JANUARY 12, 2024

As many as five different malware families were deployed by suspected nation-state actors as part of post-exploitation activities leveraging two zero-day vulnerabilities in Ivanti Connect Secure (ICS) VPN appliances since early December 2023.

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VPN Malware Authentication 107

Security Affairs

FEBRUARY 1, 2024

The government experts also ordered to monitor the authentication or identity management services that could be exposed and urged to isolate the systems from any enterprise resources to the greatest degree possible. The flaw CVE-2023-46805 (CVSS score 8.2) CISA also warned to continue to audit privilege-level access accounts.

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VPN Authentication Software Malware 132

Security Affairs

SEPTEMBER 8, 2023

A zero-day vulnerability (CVE-2023-20269) in Cisco ASA and FTD is actively exploited in ransomware attacks, the company warns. “This vulnerability is due to improper separation of authentication, authorization, and accounting (AAA) between the remote access VPN feature and the HTTPS management and site-to-site VPN features.

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Ransomware VPN Authentication Hacking 145

Security Affairs

MAY 25, 2023

Zyxel fixed two critical flaws in multiple firewall and VPN products that can lead to remote code execution or cause a DoS condition. Zyxel addressed two critical buffer overflow vulnerabilities, tracked as CVE-2023-33009 and CVE-2023-33010 , that affect several of its firewall and VPN products. Patch 2 VPN ZLD V4.30

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Firewall VPN Authentication Hacking 98

Security Affairs

AUGUST 22, 2023

The Akira ransomware gang targets Cisco VPN products to gain initial access to corporate networks and steal their data. The Akira ransomware has been active since March 2023, the threat actors behind the malware claim to have already hacked multiple organizations in multiple industries, including education, finance, and real estate.

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VPN Ransomware Hacking Education 98

The Last Watchdog

SEPTEMBER 26, 2023

26, 2023 — The Internet Infrastructure Coalition (i2Coalition) launched the VPN Trust Initiative (VTI) in 2020 to establish a baseline for how virtual private network (VPN) providers should operate. Advertising Practices: Given the complexity and different use cases for VPNs, claims must not mislead.

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VPN Internet Internet Technology 100

Zero Day

JUNE 6, 2025

Affecting "nearly all AT&T cellular customers," the company said at the time that the data included phone numbers and certain phone call data stemming from May 1, 2022, to October 31, 2022, and on January 2, 2023. At that time, the carrier said it didn't believe the data was publicly available.

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eSecurity Planet

SEPTEMBER 5, 2023

August 28, 2023 Ransomware Group Exploits Citrix NetScaler Vulnerability In July, Citrix released a patch for a critical remote code execution vulnerability ( CVE-2023-3519 ), which affected the company’s NetScaler ADC and NetScaler Gateway products and carried a severity rating of 9.8 out of 10 on the CVSS vulnerability scale.

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VPN Authentication Ransomware Antivirus 104

CyberSecurity Insiders

DECEMBER 6, 2022

When employees aren’t in the office, they’re liable to engage in risky behaviors such as using unsecured WiFi without a VPN, leaving work devices unlocked in public places, and clicking on malicious emails. While there are plenty of unknowns as we head into 2023, one thing isn’t in doubt: cybersecurity will be more important than ever.

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Security Affairs

JULY 3, 2023

Researchers reported that there are 490,000 Fortinet firewalls exposing SSL VPN interfaces on the internet, and roughly 69% of them are still vulnerable to CVE-2023-27997. For this reason, if the customer has SSL-VPN enabled, Fortinet is advising customers to take immediate action to upgrade to the most recent firmware release.

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Firewall VPN Firmware Internet 98

Security Affairs

JUNE 20, 2023

Zyxel released security updates to address a critical security flaw, tracked as CVE-2023-27992 (CVSS score: 9.8), affecting its network-attached storage (NAS) devices. The vulnerability is a pre-authentication command injection issue that impacts the Zyxel NAS326 firmware versions prior to V5.21(AAZF.14)C0, in its firewall devices.

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Firmware Firewall Authentication VPN 98

Security Affairs

JANUARY 13, 2024

Akira ransomware infections were first reported in Finland in June 2023, however, in December the number of attacks increased. ” The ransomware attack reported in late 2023, targeted organizations’ networks using poorly secured VPN gateway on Cisco ASA or FTD devices. Threat actors are wiping NAS and backup devices.

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Ransomware Backups VPN Authentication 137

Security Affairs

FEBRUARY 27, 2024

Taiwanese networking vendor Zyxel addressed four vulnerabilities, respectively tracked as CVE-2023-6397 , CVE-2023-6398 , CVE-2023-6399 , and CVE-2023-6764 , in its firewalls and access points. Patch 2 USG FLEX 50(W)/USG20(W)-VPN Not affected ZLD V4.16 Patch 2 USG FLEX 50(W)/USG20(W)-VPN Not affected ZLD V4.16

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Firewall VPN Authentication Hacking 138

Security Affairs

JUNE 13, 2023

Fortinet addressed a new critical flaw, tracked as CVE-2023-27997, in FortiOS and FortiProxy that is likely exploited in a limited number of attacks. Fortinet has finally published an official advisory about the critical vulnerability, tracked as CVE-2023-27997 (CVSS score: 9.2), impacting FortiOS and FortiProxy. through 6.2.13

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Firewall VPN Firmware Manufacturing 98

eSecurity Planet

AUGUST 28, 2023

August 21, 2023 Ivanti finds another vulnerability For the third time in a month, Ivanti’s has reported a vulnerability in a mobile device management platform. The latest — CVE-2023-38035 — affects the Sentry secure mobile gateway, part of Ivanti’s UEM platform and is being exploited as a zero-day.

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VPN Authentication Mobile Firewall 98

Security Affairs

DECEMBER 3, 2023

Zyxel addressed tens of vulnerabilities that expose users to cyber attacks, including command injection and authentication bypass. The addressed issues are tracked as CVE-2023-35136 , CVE-2023-35139 , CVE-2023-37925 , CVE-2023-37926 , CVE-2023-4397 , CVE-2023-4398 , CVE-2023-5650 , CVE-2023-5797 , CVE-2023-5960.

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Firewall Authentication VPN Cyber Attacks 132

eSecurity Planet

AUGUST 28, 2023

August 21, 2023 Ivanti finds another vulnerability For the third time in a month, Ivanti’s has reported a vulnerability in a mobile device management platform. The latest — CVE-2023-38035 — affects the Sentry secure mobile gateway, part of Ivanti’s UEM platform and is being exploited as a zero-day.

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VPN Authentication Mobile Firewall 95

Security Affairs

JANUARY 13, 2024

Akira ransomware infections were first reported in Finland in June 2023, however, in December the number of attacks increased. ” The ransomware attack reported in late 2023, targeted organizations’ networks using poorly secured VPN gateway on Cisco ASA or FTD devices. Threat actors are wiping NAS and backup devices.

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Ransomware Backups VPN Authentication 124

Security Affairs

JUNE 22, 2023

The proof-of-concept (PoC) exploit code for high-severity vulnerability (CVE-2023-20178) in Cisco AnyConnect Secure was published online. The client update process is executed after a successful VPN connection is established.” ” reads the advisory published by the company.

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VPN Mobile Software Authentication 98

SecureList

NOVEMBER 14, 2022

We polled our experts from the GReAT team and have gathered a small number of key insights about what APT actors are likely to focus on in 2023. Okta was breached through one of its service providers, Sitel, itself compromised via the insecure VPN gateway of a recently acquired company. What we predicted in 2022.

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Firmware Surveillance Mobile Telecommunications 129

SecureList

SEPTEMBER 21, 2023

We conducted an analysis of the IoT threat landscape for 2023, as well as the products and services offered on the dark web related to hacking connected devices. In the first half of 2023, 97.91% of password brute-force attempts registered by our honeypots targeted Telnet, and only 2.09%, SSH.

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IoT DDOS Passwords Malware 137

The Hacker News

APRIL 30, 2025

The vulnerabilities in question are listed below - CVE-2023-44221 (CVSS score: 7.2) - Improper neutralization of special elements in the SMA100 SSL-VPN management interface allows a remote authenticated attacker with administrative privilege to

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VPN Mobile Authentication 106

Malwarebytes

JANUARY 11, 2023

The first Microsoft Patch Tuesday of 2023 is an important one to start of the year with. ended January 10, 2023. The actively exploited vulnerability is listed as CVE-2023-21674. In a network-based attack, an unauthenticated attacker could bypass authentication and make an anonymous connection. SharePoint Server.

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B2B Encryption VPN Software 98

Malwarebytes

JULY 21, 2023

This means that Federal Civilian Executive Branch (FCEB) agencies need to remediate this vulnerability by August 9, 2023 to protect their networks against active threats. The actively exploited CVE patched in this update is CVE-2023-3519 a Citrix NetScaler ADC and NetScaler Gateway code injection vulnerability with a CVSS score of 9.8

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Authentication VPN Cybercrime Cybersecurity 98

Cisco Security

AUGUST 24, 2023

Cisco is aware of reports that Akira ransomware threat actors have been targeting Cisco VPNs that are not configured for multi-factor authentication to infiltrate organizations, and we have observed instances where threat actors appear to be targeting organizations that do not configure multi-factor authentication for their VPN users.

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Authentication Ransomware VPN Passwords 82

Malwarebytes

JANUARY 11, 2024

Successful exploitation would give an attacker the ability to run arbitrary code on Ivanti’s Virtual Private Network (VPN) system. Ivanti Connect Secure is a widely used VPN solution that allows users to connect to their organization’s network. The CVEs mentioned in these reports are: CVE-2023-46805 ( CVSS score 8.2

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VPN Authentication Software Risk 128