Red Hat Security Advisory: python-pyasn1 security update
Affects Red Hat python-pyasn1Source GCVE Database
Not known to be exploited.
Data as of 31 Oct 2026, 20:20 UTC
Rated by Threat Radar · No CVSS score from NVD or the CNA
- EPSS
- 0.7% chance of exploitation in 30 days – higher than 55% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Exploitation evidence
Disclosed: evidence found.
CVE published 10 Mar 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 31 Oct 2026.
What to do
AI-suggested
Red Hat has released updated python-pyasn1 packages that fix this vulnerability. Users of Red Hat Enterprise Linux 10.0 Extended Update Support should apply the provided security update as detailed in the Red Hat advisory (RHSA-2026:4138) to remediate the issue. No additional mitigations are specified or required beyond applying the official update.
Description
A denial of service vulnerability exists in the python-pyasn1 library due to memory exhaustion caused by malformed RELATIVE-OID data. This issue affects Red Hat Enterprise Linux 10.0 Extended Update Support versions. Red Hat has issued a security advisory with an update to address this vulnerability.