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 an official security update for fence-agents in Red Hat Enterprise Linux 8.4 Extended Life Cycle and Advanced Update Support. Users should apply the provided update as described in the Red Hat advisory (https://access.redhat.com/articles/11258) to remediate the vulnerability. No additional mitigation steps are indicated beyond applying this update.
Description
A denial of service vulnerability (CVE-2026-59886) exists in the pyasn1 library used by fence-agents, which are scripts for remote power management in cluster devices. The flaw involves crafted ASN.1 REAL values that can cause a denial of service. Red Hat has issued an important security update for fence-agents in Red Hat Enterprise Linux 8.4 to address this issue.