Buffer overflow in Amlogic Android Sdk
CVE-2026-119739
The VobSub subtitle decoder libsub_vob (part of the Amlogic DroidLogic SubTitleService), as shipped on Nexbox A95X (Amlogic S905X) TV boxes, contains an out-of-bounds write vulnerability in vob_fill_pixel() that allows remote attackers to corrupt stack memory by sending a crafted SET_CONTR command with an attacker-controlled alpha value that drives an unbounded array index (change_data) past the end of the fixed four-element PixelDatas array. Attackers can exploit this by sending malicious VobSub data over the unauthenticated tcp/10100 socket or via a malicious .sub file to zero out adjacent stack bytes, resulting in silent stack corruption or process crash.
Vulnerability class: Buffer Overflow
Published .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
- Amlogic Android Sdk — versions 0
Weakness classification (CWE)
References
- mstreet97.github.io/security-research/vulnerability-disclosure/embedded/cve/202… (technical-description, exploit)
- www.vulncheck.com/advisories/amlogic-droidlogic-subtitleservice-out-of-bounds-w… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-119739?
- CVE-2026-119739 is a medium-severity vulnerability in Amlogic Android Sdk, classified under Out-of-bounds Write. CVSS score: 5.3/10. Published 2026-11-02.
- How severe is CVE-2026-119739?
- Medium severity. CVSS v3 base score is 5.3 out of 10.