--- title: "CVE-2026-103242: RPM - Buffer Overflow" description: "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." url: https://panop.io/threat-heartbeat/CVE-2026-103242/ --- # 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 ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-103242) ## 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](https://cwe.mitre.org/data/definitions/122.html) ## 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 - [https://nvd.nist.gov/vuln/detail/CVE-2026-103242](https://nvd.nist.gov/vuln/detail/CVE-2026-103242) - [https://access.redhat.com/security/cve/CVE-2026-103242](https://access.redhat.com/security/cve/CVE-2026-103242) - [https://bugzilla.redhat.com/show\_bug.cgi?id=2543866](https://bugzilla.redhat.com/show_bug.cgi?id=2543866) [← All CVEs](https://panop.io/threat-heartbeat/) ## What this record can't tell you - Whether you run the affected software, and where - Whether an attacker can actually reach and exploit it - The misconfigurations that never get a CVE number - What it would cost the business, ranked into what to fix first Panop answers these inside your environment, for this CVE and every other finding. [Book a demo](https://panop.io/demo)