CVE-2020-36138

An issue was discovered in decode_frame in libavcodec/tiff.c in FFmpeg version 4.3, allows remote attackers to cause a denial of service (DoS).

Published: 2023-08-11 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2020-36138 is rated Moderate Risk (49.7/100): CVSS High severity, with medium exploitation likelihood (EPSS 0.90%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2020-36138

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 0.35% 0.90% +0.54%
2 2026-05-06 0.28% 0.35% +0.07%
3 2025-11-21 — 0.28% —

Full EPSS history (9 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2020-36138

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 3.6 [email protected]

Weakness enumeration for CVE-2020-36138

OS Trackers for CVE-2020-36138

vendor priority summary link
alpine high CVE-2020-36138: 1 source package rows (ffmpeg); 2 state rows across 2 repos (3.22-community, edge-community); fixed 0, open 2. https://security.alpinelinux.org/vuln/CVE-2020-36138
debian unimportant CVE-2020-36138 unimportant priority: Debian including 1 source packages (ffmpeg), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2020-36138
suse medium CVE-2020-36138 severity moderate: SUSE including 52 source package names (ffmpeg, ffmpeg-4, …), 348 product×package rows across 20 product lines (SUSE CaaS Platform 4.0, SUSE Enterprise Storage 7.1, … (20 product lines)): Known Not Affected 348. https://www.suse.com/security/cve/CVE-2020-36138/
ubuntu medium CVE-2020-36138 medium priority: Ubuntu including 1 source packages (ffmpeg), 7 status rows across 7 suites (bionic, focal, jammy, lunar, trusty, upstream, xenial): not-affected 5, ignored 1, needs-triage 1. https://ubuntu.com/security/CVE-2020-36138

Affected software / configurations for CVE-2020-36138

Vendor Product Version Raw CPE
ffmpeg ffmpeg 4.3 cpe:2.3:a:ffmpeg:ffmpeg:4.3:*:*:*:*:*:*:*

References for CVE-2020-36138

cvelogic Threat Intelligence