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VulnerabilityPublished

CVE-2026-103242: rpm security update

Affects rpmSource GCVE Database

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Authoritative record:CVE-2026-103242· High 7.1

Not known to be exploited · CVSS 7.1 High : upgrade to 4.18.2-43.oe2403sp3 soon.

Data as of 4 Nov 2026, 16:58 UTC

CVSS 3.1 base score
7.1High
How severe the flaw is on the 0–10 CVSS scale.
Patch
Available – fixed in 4.18.2-43.oe2403sp3
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 30 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 4 Nov 2026.

What to do

Upgrade rpm to 4.18.2-43.oe2403sp3.

Affected software

ProductAffectedFixed in
openEuler 24.03-LTS-SP3rpmpkg:rpm/openEuler/rpm&distro=openEuler-24.03-LTS-SP3Other threatsAffected
  • <4.18.2-43.oe2403sp3
Fixed in
  • 4.18.2-43.oe2403sp3

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Apply the official security update by upgrading rpm to version 4.18.2-43.oe2403sp3 or later. This update fixes the heap-based buffer overflow vulnerability. No additional mitigation steps are indicated by the vendor advisory.

Description

A heap-based buffer overflow vulnerability exists in the RPM Package Manager (rpm) due to improper handling of the RPMTAG_FILESIGNATURES header in crafted unsigned RPM packages. This flaw allows an attacker to cause a buffer overflow by providing a tag with an incorrect header type, leading to memory corruption when processed by rpm2cpio, rpm2archive, or rpm -qlvp commands on untrusted packages. The issue is fixed in version 4.18.2-43.oe2403sp3.

References

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