VulnHub

A newly discovered vulnerability in the Linux kernel, identified as CVE-2026-46331 and dubbed 'pedit COW', poses a significant risk by allowing unprivileged local users to gain root access on affected systems. This flaw resides in the traffic-control subsystem, specifically in the packet-editing action (act_pedit), which can lead to an out-of-bounds write that corrupts shared page-cache memory. The public release of a working exploit occurred just a day after the vulnerability was disclosed on June 16, raising concerns about its potential for exploitation. Red Hat has classified this flaw as important, emphasizing the urgency for users to assess their systems and apply necessary security measures. Given the rapid emergence of exploits, organizations using Linux systems should prioritize patching and monitoring for unusual activity to mitigate the risk of unauthorized access.

A serious vulnerability in Cisco Catalyst SD-WAN, identified as CVE-2026-20245, has been exploited by hackers for months before it was publicly disclosed. This flaw, which has a CVSS score of 7.8, allows authenticated attackers to execute privileged commands on affected systems. Google-owned Mandiant reported that the exploitation occurred at least two months prior to the disclosure, raising concerns about the security of networks using this technology. Organizations using Cisco Catalyst SD-WAN should take immediate action to secure their systems, as this vulnerability poses a significant risk to network integrity. The incident serves as a reminder of the importance of timely disclosure and patch management in cybersecurity.

A recently discovered vulnerability in Cisco Catalyst SD-WAN has been exploited by an unknown attacker for at least two months before its public disclosure. This security flaw, identified as CVE-2026-20245, has a high severity rating of 7.8 and allows an authenticated local attacker to execute arbitrary commands with elevated privileges. This means that if an attacker gains access to a system, they could potentially take control of critical functions within the network. Companies using Cisco Catalyst SD-WAN should be aware of the risk posed by this vulnerability and take immediate action to protect their systems. The findings from Mandiant underscore the importance of timely patching and monitoring for unusual activity in network environments.

Mandiant has reported on a serious vulnerability in Cisco's Catalyst SD-WAN, identified as CVE-2026-20245, which has been exploited by hackers to gain root access to affected devices. This zero-day attack allows attackers to create unauthorized root accounts, compromising network security for organizations using this technology. The vulnerability poses a significant risk to businesses relying on Cisco's SD-WAN solutions, as it can lead to unauthorized access and potential data breaches. Companies should urgently assess their systems for this vulnerability and implement necessary security measures to protect their networks.

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has issued a warning regarding a serious vulnerability affecting Lantronix EDS5000 Series devices. This flaw, identified as CVE-2025-67038, has a high severity score of 9.8 and involves a code injection issue that could allow attackers to execute malicious code. CISA is urging Federal Civilian Executive Branch agencies to implement available fixes before the deadline of June 26, 2026. The active exploitation of this vulnerability raises concerns about potential unauthorized access and control over affected devices, which could lead to significant security breaches. Organizations using these devices should prioritize applying security updates to mitigate risks.

A newly discovered vulnerability, CVE-2026-20230, affects Cisco's Unified Communications Manager (Unified CM) and is currently being exploited in the wild. This issue is a server-side request forgery (SSRF) flaw that allows attackers to drop webshells and execute code remotely on the affected servers. According to threat intelligence firm Defused, automated attacks have been observed using the Tor network to deploy these webshells. The exploitation process involves abusing the WebDialer SSRF to install a malicious Apache Axis service, which then facilitates the execution of further malicious payloads. Organizations using Cisco Unified CM should be aware of this security threat and take steps to mitigate potential risks.

A serious security flaw has been discovered in Cisco Unified Communications Manager (Unified CM) and its Session Management Edition (Unified CM SME). The vulnerability, identified as CVE-2026-20230, has a CVSS score of 8.6, indicating its severity. It involves improper input validation for specific HTTP requests, which could allow attackers to execute commands remotely without authentication. This means that unauthorized individuals could potentially gain root access to affected systems. Companies using these Cisco products need to act quickly to protect their networks, as the flaw is already being exploited in the wild.

A serious vulnerability, identified as CVE-2026-20230, has been discovered in Cisco's Unified Communications Manager Server. This Server-Side Request Forgery (SSRF) flaw is currently being exploited by attackers, raising concerns for organizations using this software. The vulnerability could allow malicious actors to manipulate requests sent from the server, potentially leading to unauthorized access to sensitive systems. Companies that rely on Cisco's Unified Communications infrastructure need to prioritize patching their systems to protect against these active exploits. As the situation evolves, it is crucial for affected users to stay informed and take immediate action to mitigate risks.

Hackers are taking advantage of a recently patched vulnerability in the Gravity SMTP plugin for WordPress, which is used on around 100,000 websites. This security flaw, identified as CVE-2026-4020, allows attackers without authentication to access sensitive information, including API keys and OAuth tokens. The vulnerability has a medium severity score of 5.3, but the potential exposure of critical data makes it a significant concern for site administrators. Users of the Gravity SMTP plugin need to ensure they update to the latest version to protect their sites from these attacks. The urgency of addressing this issue is heightened by the fact that the vulnerability is currently being exploited in the wild.