CVE-2018-9841
The export function in libavfilter/vf_signature.c in FFmpeg through 3.4.2 allows remote attackers...
CVE-2018-9841 is a high vulnerability (CVSS 8.8) in Ffmpeg, published April 7, 2018. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.73%, the 77th percentile. Fixed in ffmpeg 4.0.0-r0.
The export function in libavfilter/vf_signature.c in FFmpeg through 3.4.2 allows remote attackers to cause a denial of service (out-of-array access) or possibly have unspecified other impact via a long filename.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
The export function in libavfilter/vf_signature.c in FFmpeg through 3.4.2 allows remote attackers to cause a denial of service (out-of-array access) or possibly have unspecified other impact via a long filename.
- Record
CVE-2018-9841- CVSS 3.0
- 8.8 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - CVSS 2.0
- 6.8 Medium
AV:N/AC:M/Au:N/C:P/I:P/A:P - Weakness
- CWE-125
- Updated
- 2026-11-02
CVE List No score
The export function in libavfilter/vf_signature.c in FFmpeg through 3.4.2 allows remote attackers to cause a denial of service (out-of-array access) or possibly have unspecified other impact via a long filename.
- Record
CVE-2018-9841- Updated
- 2026-11-02
EUVDEUVD-2018-21435 No score
The export function in libavfilter/vf_signature.c in FFmpeg through 3.4.2 allows remote attackers to cause a denial of service (out-of-array access) or possibly have unspecified other impact via a long filename.
- Record
EUVD-2018-21435- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-pch3-qm5g-746r
The export function in libavfilter/vf_signature.c in FFmpeg through 3.4.2 allows remote attackers...
The export function in libavfilter/vf_signature.c in FFmpeg through 3.4.2 allows remote attackers to cause a denial of service (out-of-array access) or possibly have unspecified other impact via a long filename.
- Record
GHSA-pch3-qm5g-746r- CVSS 3.0
- 8.8 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Weakness
- CWE-125
- Updated
- 2026-11-02
OSVALPINE-CVE-2018-9841
The export function in libavfilter/vf_signature.c in FFmpeg through 3.4.2 allows remote attackers to cause a denial of service (out-of-array access) or possibly have unspecified other impact via a long filename.
- Record
ALPINE-CVE-2018-9841- CVSS 3.0
- 8.8 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Updated
- 2026-11-03
OSV
The export function in libavfilter/vf_signature.c in FFmpeg through 3.4.2 allows remote attackers to cause a denial of service (out-of-array access) or possibly have unspecified other impact via a long filename.
- Record
CVE-2018-9841- CVSS 3.0
- 8.8 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVDEBIAN-CVE-2018-9841
The export function in libavfilter/vf_signature.c in FFmpeg through 3.4.2 allows remote attackers to cause a denial of service (out-of-array access) or possibly have unspecified other impact via a long filename.
- Record
DEBIAN-CVE-2018-9841- CVSS 3.0
- 8.8 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVUBUNTU-CVE-2018-9841
The export function in libavfilter/vf_signature.c in FFmpeg through 3.4.2 allows remote attackers to cause a denial of service (out-of-array access) or possibly have unspecified other impact via a long filename.
- Record
UBUNTU-CVE-2018-9841- CVSS 3.0
- 8.8 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
ffmpegAlpine:v3.10 |
before 4.0.0-r0 | 4.0.0-r0 |
ffmpegAlpine:v3.11 |
before 4.0.0-r0 | 4.0.0-r0 |
ffmpegAlpine:v3.12 |
before 4.0.0-r0 | 4.0.0-r0 |
ffmpegAlpine:v3.13 |
before 4.0.0-r0 | 4.0.0-r0 |
ffmpegAlpine:v3.14 |
before 4.0.0-r0 | 4.0.0-r0 |
ffmpegAlpine:v3.15 |
before 4.0.0-r0 | 4.0.0-r0 |
ffmpegAlpine:v3.16 |
before 4.0.0-r0 | 4.0.0-r0 |
ffmpegAlpine:v3.17 |
before 4.0.0-r0 | 4.0.0-r0 |
ffmpegAlpine:v3.18 |
before 4.0.0-r0 | 4.0.0-r0 |
ffmpegAlpine:v3.19 |
before 4.0.0-r0 | 4.0.0-r0 |
Show 16 moreShow less
| Package | Affected | Fixed |
|---|---|---|
ffmpegAlpine:v3.20 |
before 4.0.0-r0 | 4.0.0-r0 |
ffmpegAlpine:v3.21 |
before 4.0.0-r0 | 4.0.0-r0 |
ffmpegAlpine:v3.22 |
before 4.0.0-r0 | 4.0.0-r0 |
ffmpegAlpine:v3.23 |
before 4.0.0-r0 | 4.0.0-r0 |
ffmpegAlpine:v3.24 |
before 4.0.0-r0 | 4.0.0-r0 |
ffmpeg4Alpine:v3.16 |
before 4.0.0-r0 | 4.0.0-r0 |
ffmpeg4Alpine:v3.17 |
before 4.0.0-r0 | 4.0.0-r0 |
ffmpeg4Alpine:v3.18 |
before 4.0.0-r0 | 4.0.0-r0 |
ffmpeg4Alpine:v3.19 |
before 4.0.0-r0 | 4.0.0-r0 |
ffmpeg4Alpine:v3.20 |
before 4.0.0-r0 | 4.0.0-r0 |
ffmpeg4Alpine:v3.21 |
before 4.0.0-r0 | 4.0.0-r0 |
ffmpeg4Alpine:v3.22 |
before 4.0.0-r0 | 4.0.0-r0 |
ffmpegDebian:12 |
before 7:3.4.3-1 | 7:3.4.3-1 |
ffmpegDebian:13 |
before 7:3.4.3-1 | 7:3.4.3-1 |
ffmpegDebian:14 |
before 7:3.4.3-1 | 7:3.4.3-1 |
ffmpegUbuntu:18.04:LTS |
before 7:3.4.4-0ubuntu0.18.04.1, plus listed versions 7:3.3.4-27:3.3.4-2build37:3.4-2ubuntu27:3.4-47:3.4-4build1 Show 5 moreShow less7:3.4.1-17:3.4.1-1build17:3.4.2-17:3.4.2-1build17:3.4.2-2 |
7:3.4.4-0ubuntu0.18.04.1 |
History
| When | Changed | Sources |
|---|---|---|
| 2026-11-03 | affected, aliases, references | OSV |
| 2026-11-03 | aliases | EUVD |
| 2026-11-02 | created | CVE List, GitHub Advisories, NVD, OSV |
References
git.videolan.org?p=ffmpeg.git%3Ba=commit%3Bh=35eeff30caf34df835206f1c12bcf4b7c2bd6758
security.gentoo.org/glsa/202003-65
nvd.nist.gov/vuln/detail/CVE-2018-9841
github.com/advisories/GHSA-pch3-qm5g-746r
security.alpinelinux.org/vuln/CVE-2018-9841
security-tracker.debian.org/tracker/CVE-2018-9841
ubuntu.com/security/CVE-2018-9841
cve.org/CVERecord?id=CVE-2018-9841