CVE-2026-103242 RPM - Buffer Overflow

RPM contains a heap-based buffer overflow caused by incorrect header type declaration of RPMTAG_FILESIGNATURES in crafted unsigned packages, letting attackers cause memory corruption via rpm2cpio, rpm2archive, and rpm -qlvp, exploit requires crafted untrusted package.

CVSS base score 7.1 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.12% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Buffer Overflow
Impact
Remote Code Execution, Denial Of Service
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H
Published
30 September 2026
Updated
15 October 2026
Weakness
CWE-122

Vendor fix

Update to the latest version of RPM that fixes this issue.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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