libaribcaption 1.1.0 through 1.1.2 Out-of-Bounds Read via DecoderImpl::HandleGLGR

Advisories

libaribcaption 1.1.0 through 1.1.2 Out-of-Bounds Read via DecoderImpl::HandleGLGR

Severity: medium
Date: 10/19/2026
Affecting: libaribcaption >= 1.1.0, <= 1.1.2
CVE: CVE-2026-112284
CWE: CWE-125 Out-of-bounds Read
CVSS: 4.8
CVSS V4 Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
References: https://hackmd.io/@haindpwn/libaribcaption-latin-special-table-oob-read
https://github.com/xqq/libaribcaption/blob/v1.1.2/src/decoder/decoder_impl.cpp
https://github.com/xqq/libaribcaption/blob/v1.1.2/src/decoder/b24_conv_tables.hpp
https://github.com/xqq/libaribcaption/commit/9917cb311c93d884cb820d122911a211042da26c
Credit: HaiND from the Post and Telecommunication Institute of Technology
Description: libaribcaption 1.1.0 through 1.1.2 contains a global out-of-bounds read in DecoderImpl::HandleGLGR() that reads past the 78-entry kLatinSpecialTable without an upper bound check. Attackers can supply crafted captions designating the Latin special set with ESC 28 4C followed by bytes 0x6F-0x7E to leak adjacent read-only data or crash decoding.

Ready to get Started?

Explore VulnCheck, a next-generation Cyber Threat Intelligence platform, which provides exploit and vulnerability intelligence to help you prioritize and remediate vulnerabilities that matter.

Vulnerability Prioritization
Prioritize vulnerabilities that matter based on the threat landscape and defer vulnerabilities that don't.
Early Warning System
Real-time alerting of changes in the vulnerability landscape so that you can take action before the attacks start.

Schedule a Demo