libaec through 1.1.7 contains an out-of-bounds read vulnerability in m_se_decode() in src/decode.c that allows attackers to bypass a signed bounds check via an overlong fundamental sequence. Attackers can supply a crafted CCSDS 121.0/SZIP stream with 2^31 or more zero bits to crash the decoder or leak adjacent memory into decoded samples.
History

Tue, 03 Nov 2026 17:00:00 +0000

Type Values Removed Values Added
First Time appeared Deutsches Klimarechenzentrum
Deutsches Klimarechenzentrum libaec
Vendors & Products Deutsches Klimarechenzentrum
Deutsches Klimarechenzentrum libaec

Tue, 03 Nov 2026 00:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-125
References
Metrics threat_severity

None

threat_severity

Moderate


Mon, 02 Nov 2026 16:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Mon, 02 Nov 2026 14:30:00 +0000

Type Values Removed Values Added
Description libaec through 1.1.7 contains an out-of-bounds read vulnerability in m_se_decode() in src/decode.c that allows attackers to bypass a signed bounds check via an overlong fundamental sequence. Attackers can supply a crafted CCSDS 121.0/SZIP stream with 2^31 or more zero bits to crash the decoder or leak adjacent memory into decoded samples.
Title libaec through 1.1.7 Out-of-Bounds Read via m_se_decode() Second Extension Decoder
Weaknesses CWE-196
References
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:H'}

cvssV4_0

{'score': 5.8, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published: 2026-11-02T14:29:13.799Z

Updated: 2026-11-02T15:46:06.742Z

Reserved: 2026-11-02T12:42:22.624Z

Link: CVE-2026-120457

cve-icon Vulnrichment

Updated: 2026-11-02T15:45:55.350Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-11-02T15:17:29.507

Modified: 2026-11-02T19:34:23.993

Link: CVE-2026-120457

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-11-02T14:29:13Z

Links: CVE-2026-120457 - Bugzilla