CVE-2026-95508: Red Hat Enterprise Linux 10 · Out-of-bounds Write
Affects Red Hat Enterprise Linux 10Source CVE Database V5
Not known to be exploited · CVSS 7.4 High.
Data as of 5 Nov 2026, 11:40 UTC
Thin evidence
One scorer or none| CNA (redhat) | CVSS 3.1 | 7.4 |
|---|
- EPSS
- 0.5% chance of exploitation in 30 days – higher than 47% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:HExploitation evidence
Disclosed: evidence found.
CVE published 22 Sep 2026
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 5 Nov 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Red Hat Enterprise Linux 10libslirp | Affected– | Fixed in– |
| Red Hat Enterprise Linux 8container-tools:rhel8/libslirp | Affected– | Fixed in– |
| Red Hat Enterprise Linux 9libslirp | Affected– | Fixed in– |
| Red Hat OpenShift Container Platform 4libslirp | Affected– | Fixed in– |
| Red Hat OpenShift Container Platform 4openshift/ose-rhel-coreos-8 | Affected– | Fixed in– |
| Red Hat OpenShift Container Platform 4openshift/ose-rhel-coreos-9 | Affected– | Fixed in– |
AI-suggested
Do not configure the SlirpConfig.if_mtu parameter below the IPv6 minimum link MTU of 1280 bytes. Since default installations use a standard MTU of 1500 bytes, they are not vulnerable.
Description
CVE-2026-95508 is a heap-based buffer overflow vulnerability in the DHCPv6 and TFTP response builders of libslirp used in Red Hat Enterprise Linux 10. It occurs when the host network interface MTU is manually configured below 1280 bytes, allowing a guest-supplied DHCPv6 CLIENTID or TFTP blksize option to overflow the reply buffer. This can lead to denial of service or potentially arbitrary code execution in the host process. Default installations with the standard 1500-byte MTU are not affected.