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CVE-2026-102633VulnerabilityPublished Updated

Bundesamt für Sicherheit in der Informationstechnik Debian · expat: Schwachstelle ermöglicht Denial of Service

Affects Bundesamt für Sicherheit in der Informationstechnik DebianSource GCVE Database

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Mentioned vulnerabilities

Not known to be exploited.

Data as of 10 Nov 2026, 11:48 UTC

Severity
High

Rated High by Threat Radar's AI analysis · CVSS not yet scored by NVD

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 29 Sep 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 10 Nov 2026.

What to do

AI-suggested

A security update fixing this vulnerability is available from Red Hat for Red Hat Enterprise Linux 10.2 Extended Update Support and related variants. Users should apply the update as detailed in the Red Hat advisory (RHSA-2026:88248). No additional mitigation steps are required beyond applying the official patch.

Description

A vulnerability in the Expat XML parser library written in C allows denial of service via an integer overflow in the expat_realloc function. This issue is tracked as CVE-2026-102633. The vulnerability affects Red Hat Enterprise Linux 10.2 Extended Update Support and related variants. A security update addressing this issue is available from Red Hat.

References

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