Red Hat Security Advisory: fence-agents security update
Affects Red Hat fence-agentsSource GCVE Database
Not known to be exploited.
Data as of 30 Oct 2026, 11:52 UTC
Rated by Threat Radar · CVSS not yet scored by NVD
- EPSS
- 0.6% chance of exploitation in 30 days – higher than 49% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Exploitation evidence
Disclosed: evidence found.
CVE published 24 Aug 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 30 Oct 2026.
What to do
AI-suggested
Red Hat has released updated fence-agents packages for Red Hat Enterprise Linux 9.4 and its variants that fix this denial of service vulnerability. Users should apply the provided security update as detailed in the Red Hat advisory (RHSA-2026:58547) to remediate the issue. No additional mitigation steps are indicated or required beyond applying the official update.
Description
A security update for the fence-agents packages in Red Hat Enterprise Linux addresses a denial of service vulnerability in the pyasn1 library. The flaw (CVE-2026-59886) involves crafted ASN.1 REAL values that can cause a denial of service. Fence-agents are used for remote power management in cluster environments to forcibly restart and remove failed or unreachable nodes. This update is rated as important by Red Hat and affects multiple Red Hat Enterprise Linux 9.4 variants.