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CVE-2026-59886VulnerabilityPublished 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 30 Oct 2026, 11:52 UTC

Severity
High

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

  1. Disclosed: evidence found.

    CVE published 25 Aug 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 30 Oct 2026.

What to do

AI-suggested

Red Hat has released updated python-pyasn1 packages for Red Hat Enterprise Linux 8.6 Extended Life Cycle and AUS variants that address this vulnerability. Users should apply these official updates as described in the Red Hat advisory (RHSA-2026:59246) to remediate the issue. No additional mitigation steps are indicated or required beyond applying the vendor-provided patches.

Description

A security vulnerability in the python-pyasn1 library allows denial of service via crafted ASN.1 REAL values. This issue affects Red Hat Enterprise Linux 8.6 variants and has been addressed by Red Hat in updated python-pyasn1 packages. The vulnerability is rated as important by Red Hat Product Security.

References

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