The sbr_make_f_master function in aacsbr.c in Libav 11.7 allows remote attackers to cause a denial of service (divide-by-zero error and application crash) via a crafted mp3 file.
Conclusion & alert: CVE-2016-7499 is rated Moderate Risk (47.2/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.43%). Mandatory action: Review affected assets and schedule remediation.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-06-15 | 0.54% | 1.43% | +0.89% |
| 2 | 2025-08-18 | 0.24% | 0.54% | +0.30% |
| 3 | 2025-03-19 | — | 0.24% | — |
Full EPSS history (7 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 5.5 | 3.0 | MEDIUM |
|
1.8 | 3.6 | [email protected] |
| 4.3 | 2.0 | MEDIUM |
|
8.6 | 2.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
ubuntu
|
low | CVE-2016-7499 low priority: Ubuntu including 1 source packages (libav), 8 status rows across 8 suites (artful, bionic, precise, trusty, upstream, xenial, yakkety, zesty): DNE 5, ignored 2, needs-triage 1. | https://ubuntu.com/security/CVE-2016-7499 |
| URL | Tags |
|---|---|
| http://www.openwall.com/lists/oss-security/2016/09/21/9 | Mailing List Third Party Advisory |
| http://www.securityfocus.com/bid/93102 | Third Party Advisory VDB Entry |
| https://blogs.gentoo.org/ago/2016/09/21/libav-divide-by-zero-in-sbr_make_f_master-aacsbr-c/ | Patch Third Party Advisory VDB Entry |
| https://git.libav.org/?p=libav.git%3Ba=blobdiff%3Bf=libavcodec/aacsbr.c%3Bh=7d156e525b40b197c38db17acf16730845b91e56%3Bhp=dbfb1677813ce6c531e4362d0be7ccf9fdfdd28e%3Bhb=a50a5ff29ec5a8243499769e2bb9b5509ce9fd52%3Bhpb=f55e3ff5891daf3d538b4d9176371960200d68fa |