Skip to content
Critical GNU C Library Vulnerabilities Affect Ubuntu 26.04 LTS

Critical GNU C Library Vulnerabilities Affect Ubuntu 26.04 LTS

First seen 9 Sep 2026, 14:44 UTC • •

Article Content

Browse articles
ThreatCluster AI
ThreatCluster •September 10, 2026 at 14:16 UTC
  • •Multiple critical vulnerabilities in GNU C Library affect Ubuntu 26.04 LTS.
  • •Exploitable issues include buffer overflows and stack overflows, allowing denial of service.
  • •Patches are available; users should update systems immediately.

Multiple vulnerabilities were discovered in the GNU C Library (glibc) affecting Ubuntu 26.04 LTS. Key issues include a buffer overflow in the strfmon function (CVE-2026-19499), an out-of-bounds access in tdelete (CVE-2026-19542), and a stack overflow in wordexp (CVE-2026-6791). These vulnerabilities could allow attackers to cause denial of service or execute arbitrary code. The vulnerabilities were disclosed on 2026-09-08, and patches are available. Users are advised to update their systems to mitigate potential risks. The vulnerabilities are critical as they can be exploited remotely, impacting system stability and security.

Start a free Starter trial for enhanced analysis

Ask AI about this cluster

Updated 44d ago How this analysis works

Timeline

2026-08-10
CVE-2026-6368 published
An out-of-bounds access vulnerability in wordexp was disclosed, affecting glibc.
Linuxsecurity
2026-08-10
CVE-2026-6791 published
A stack overflow vulnerability in wordexp was disclosed, impacting Ubuntu systems.
Linuxsecurity
2026-09-08
Security notice USN-8737-1 released
Ubuntu published a security notice detailing multiple vulnerabilities in glibc affecting Ubuntu 26.04 LTS.
Ubuntu

More articles in this cluster (4)

Following this threat?

Track Ubuntu and CVE-2026-19499 in your own feed — you're alerted when they show up in new reporting, leak sites or exploitation.

Free account · no card needed