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CVE-2026-23490VulnerabilityPublished Updated

Red Hat Security Advisory: python-pyasn1 security update

Affects Red Hat python-pyasn1Source GCVE Database

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Not known to be exploited.

Data as of 31 Oct 2026, 20:20 UTC

Severity
High

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

  1. Disclosed: evidence found.

    CVE published 10 Mar 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq 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 provided updated python-pyasn1 packages that fix this vulnerability. Users of Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions should apply the security update as described in Red Hat advisory RHSA-2026:4140. No additional mitigation steps are indicated by the vendor.

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 9.0 Update Services for SAP Solutions on multiple architectures. Red Hat has issued an important security update to address this vulnerability.

References

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