CVE-2022-3964 | ffmpeg QuickTime RPZA Video Encoder rpzaenc.c out-of-bounds

A vulnerability classified as problematic has been found in ffmpeg. This affects an unknown part of the file libavcodec/rpzaenc.c of the component QuickTime RPZA Video Encoder. The manipulation of the argument y_size leads to out-of-bounds read. It is possible to initiate the attack remotely. The name of the patch is 92f9b28ed84a77138105475beba16c146bdaf984. It is recommended to apply a patch to fix this issue. The associated identifier of this vulnerability is VDB-213543.

Published: 2022-11-13 Last update: 2026-06-17 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2022-3964 is rated Moderate Risk (47.9/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 3.47%). 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-2022-3964

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 2026-06-21 3.44% 3.47% +0.03%
2 2026-06-15 0.06% 3.44% +3.38%
3 2025-11-21 — 0.06% —

Full EPSS history (14 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2022-3964

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
4.3 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L 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:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
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:L)
Might cause slowdowns, glitches, or partial disruption—not a full brick.
 2.8 1.4 [email protected]
8.1 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/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:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big 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.
 2.8 5.2 [email protected]

Weakness enumeration for CVE-2022-3964

OS Trackers for CVE-2022-3964

vendor priority summary link
alpine — CVE-2022-3964: 2 source package rows (ffmpeg, ffmpeg5); 149 state rows across 7 repos (3.17-community, 3.18-community, 3.19-community, 3.20-community, 3.22-community, 3.23-community, edge-community); fixed 64, open 85. https://security.alpinelinux.org/vuln/CVE-2022-3964
debian unimportant CVE-2022-3964 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-2022-3964
gentoo high CVE-2022-3964: 1 GLSA(s) (202312-14), 1 atom(s) (media-video/ffmpeg); latest impact high. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2022-3964
suse high CVE-2022-3964 severity important: SUSE including 139 source package names (ffmpeg, ffmpeg-4-4.4-150400.3.5.1, …), 502 product×package rows across 36 product lines (Image SLES15-SP4-SAP-Azure-LI-BYOS, Image SLES15-SP4-SAP-Azure-LI-BYOS-Production, … (36 product lines)): Known Not Affected 322, Fixed 180. https://www.suse.com/security/cve/CVE-2022-3964/
ubuntu medium CVE-2022-3964 medium priority: Ubuntu including 1 source packages (ffmpeg), 13 status rows across 13 suites (bionic, focal, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): ignored 4, not-affected 3, released 3, needed 2, DNE 1. https://ubuntu.com/security/CVE-2022-3964

Affected software / configurations for CVE-2022-3964

Vendor Product Version Raw CPE
ffmpeg ffmpeg >= 4.4, < 4.4.4 cpe:2.3:a:ffmpeg:ffmpeg:*:*:*:*:*:*:*:*
ffmpeg ffmpeg >= 5.0, < 5.0.3 cpe:2.3:a:ffmpeg:ffmpeg:*:*:*:*:*:*:*:*
ffmpeg ffmpeg >= 5.1, < 5.1.3 cpe:2.3:a:ffmpeg:ffmpeg:*:*:*:*:*:*:*:*

References for CVE-2022-3964

cvelogic Threat Intelligence