GnuTLS 3.8.13 Released with Fix for 12 Vulnerabilities Affecting
GnuTLS has released version 3.8.13, an update that addresses 12 security vulnerabilities. This includes critical flaws specifically impacting secure network communications. The update is highly...
GnuTLS has released version 3.8.13, an update that addresses 12 security vulnerabilities. This includes critical flaws specifically impacting secure network communications.
The update is highly recommended for all systems using GnuTLS, as it addresses memory corruption, authentication bypasses, and certificate validation errors.
Four vulnerabilities discovered in this release are categorized as High severity and require immediate attention from security teams.
These critical flaws primarily impact the Datagram Transport Layer Security (DTLS) implementation and specific authentication configurations.
Threat actors often target these types of memory corruption and bypass vulnerabilities to compromise remote servers or disrupt services.
The update fixes a wide range of bugs, from timing side channels to critical heap overruns.
The table below highlights the most significant vulnerabilities patched in version 3.8.13:
| CVE ID | Severity | Issue Type | Summary |
|---|---|---|---|
| CVE-2026-33846 | High | Heap Overwrite | Missing checks could let attackers overwrite memory. |
| CVE-2026-42010 | High | Auth Bypass | Flawed username handling allows login bypass. |
| CVE-2026-33845 | High | Heap Overrun | Memory error may let attackers overflow data remotely. |
| CVE-2026-42009 | High | Undefined Behavior | Packet sorting flaw may cause unpredictable issues. |
| CVE-2026-42013 | Medium | Cert Validation Issue | Improper certificate checks could weaken security. |
| CVE-2026-42014 | Medium | Use-After-Free | Memory bug triggered during PIN changes. |
| CVE-2026-3833 | Moderate | Constraint Bypass | Domain checks ignore case rules, risking validation bypass. |
| CVE-2026-5419 | Low | Timing Leak | Timing flaw may expose sensitive information. |
According to the GnuTLS Security Advisory 2026, admins should upgrade to GnuTLS 3.8.13 to mitigate these threats.
Public-facing servers utilizing DTLS or RSA-PSK authentication are at the highest risk. They should be patched during the next available maintenance window.
To proactively defend, security operations centers should update their monitoring tools to detect anomalous DTLS traffic or malformed RSA-PSK authentication attempts.
Ensuring that foundational cryptographic libraries remain up to date is a critical strategy for preventing initial network compromise.
Disclaimer: HackersRadar reports on cybersecurity threats and incidents for informational and awareness purposes only. We do not engage in hacking activities, data exfiltration, or the hosting or distribution of stolen or leaked information. All content is based on publicly available sources.
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