NULL pointer dereference in Flvmeta
CVE-2026-82821
A vulnerability was determined in FLVMeta up to 1.2.2. Affected by this vulnerability is the function amf_object_get of the file src/amf.c of the component AMF Object Parsing. This manipulation causes null pointer dereference. The attack may be initiated remotely. The exploit has been publicly disclosed and may be utilized. Patch name: 52642f7dfb76ec7334016622dde60b1ae963d79b. To fix this issue, it is recommended to deploy a patch. 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."
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L.
EPSS exploit prediction
EPSS: 0.006 (46.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 46th percentile — 46.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.006 · change: +0.002
Affected products
- Flvmeta — versions 1.2.0, 1.2.1, 1.2.2
Weakness classification (CWE)
References
- vuldb.com/vuln/397244 (technical-description, vdb-entry)
- vuldb.com/vuln/397244/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-82821 (third-party-advisory)
- vuldb.com/submit/876597 (third-party-advisory)
- github.com/noirotm/flvmeta/issues/28 (issue-tracking)
- github.com/raind20001020/Poc/blob/main/flvmeta_SEGV (exploit)
- github.com/noirotm/flvmeta/commit/52642f7dfb76ec7334016622dde60b1ae963d79b (patch)
Frequently asked questions
- What is CVE-2026-82821?
- CVE-2026-82821 is a medium-severity vulnerability in Flvmeta, classified under Improper Resource Shutdown or Release. CVSS score: 4.3/10. Published 2026-08-31.
- How severe is CVE-2026-82821?
- Medium severity. CVSS v3 base score is 4.3 out of 10.