CVE-2026-82820: Heap-based Buffer Overflow in FLVMeta
Description
A vulnerability was found in FLVMeta up to 1.2.2. Affected is the function amf_string_new of the file src/amf.c of the component AMF String Processing. The manipulation of the argument length results in heap-based buffer overflow. The attack can be launched remotely. The exploit has been made public and could be used. The patch is identified as f412a33b9a84c2d1a9dee145a868feddbf64879e. A patch should be applied to remediate this issue. The project maintainer doubts the security impact: "While I acknowledged the bugs and provided fixes, I have yet to see any way to exploit these alleged vulnerabilities."
CVSS v4.0
Score 5.3medium
Affected software
FLVMeta
cpe:2.3:a:flvmeta:flvmeta:*:*:*:*:*:*:*:*AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in FLVMeta (versions 1.2.0, 1.2.1, and 1.2.2) affects the amf_string_new function in src/amf.c, where manipulation of the length argument leads to a heap-based buffer overflow. This flaw allows remote attackers to potentially cause memory corruption. Although an exploit has been publicly disclosed, the maintainer doubts the feasibility of exploitation. A patch identified by commit f412a33b9a84c2d1a9dee145a868feddbf64879e is available to fix the issue.
Potential Impact
Successful exploitation could lead to heap memory corruption, which may cause application crashes or potentially allow limited code execution or denial of service. However, the project maintainer has expressed skepticism about the practical exploitability of this vulnerability. No known exploits are currently observed in the wild.
Mitigation Recommendations
A patch identified by commit f412a33b9a84c2d1a9dee145a868feddbf64879e is available and should be applied to remediate this vulnerability. The project maintainer has provided fixes but notes uncertainty regarding exploitability. Users should apply the patch to ensure protection.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulDB
- Date Reserved
- 2026-08-31T05:57:01.935Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6a95cd85acd9273b49762f87
Added to database: 08/31/2026, 18:52:53 UTC
Last enriched: 09/07/2026, 14:27:23 UTC
Last updated: 10/14/2026, 06:48:21 UTC
Views: 80
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