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CVE-2026-122056

Openscap: one-byte heap buffer overflow in sds-compose may lead to denial-of-service

CVSS 3.1 5.9 MEDIUMCheck source for fixed versionsKEV status unknown
Original advisory

cve-program · CVE-2026-122056

Published

A flaw was found in OpenSCAP. A heap-based buffer overflow can occur when processing a specially crafted Extensible Configuration Checklist Description Format (XCCDF) document using the sds-compose option. An attacker could exploit this vulnerability to corrupt memory, resulting in an application crash and a Denial of Service (DoS).

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Affected versions, risk and source history

Exploitation and risk

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cve-program · CVE-2026-122056

Published

Openscap: one-byte heap buffer overflow in sds-compose may lead to denial-of-service

A flaw was found in OpenSCAP. A heap-based buffer overflow can occur when processing a specially crafted Extensible Configuration Checklist Description Format (XCCDF) document using the sds-compose option. An attacker could exploit this vulnerability to corrupt memory, resulting in an application crash and a Denial of Service (DoS).

Source published
9 Nov 2026 20:33:16 UTC
Source modified
11 Nov 2026 20:59:28 UTC
Saved here
11 Nov 2026 21:56:40 UTC
Source terms
CVE Program Terms of Use

Original source record · Cite this exact observation · Complete original publisher JSON

Source: cve-program · CVE Program Terms of Use. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.

CVSS 3.1 · 5.9 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:H

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