Red Hat Security Advisory: glibc security update
Affects Red Hat glibcSource GCVE Database
Not known to be exploited.
Data as of 30 Oct 2026, 22:21 UTC
Rated by Threat Radar · No CVSS score from NVD or the CNA
- EPSS
- 0.3% chance of exploitation in 30 days – higher than 29% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Exploitation evidence
Disclosed: evidence found.
CVE published 28 Apr 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.
What to do
AI-suggested
Red Hat has released updated glibc packages for Red Hat Enterprise Linux 9.4 Extended Update Support and related products that fix this vulnerability. Users should apply the official security update as described in Red Hat advisory RHSA-2025:4243 and the referenced article https://access.redhat.com/articles/11258 to remediate this issue. No additional mitigation steps are required beyond applying the update.
Description
A buffer overflow vulnerability exists in the GNU C Library's assert() function (CVE-2025-0395) affecting Red Hat Enterprise Linux 9.4 Extended Update Support and related products. The glibc packages provide essential system libraries required for Linux system functionality. This vulnerability has been rated as having moderate security impact by Red Hat. A security update addressing this issue is available.