CVE-2025-43962

In LibRaw before 0.21.4, phase_one_correct in decoders/load_mfbacks.cpp has out-of-bounds reads for tag 0x412 processing, related to large w0 or w1 values or the frac and mult calculations.

Published: 2025-04-21 Last update: 2025-11-03 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2025-43962 is rated Low Risk (18.3/100): CVSS Low severity, with low exploitation likelihood (EPSS 0.06%). Low composite risk—no urgent action required; patch on your normal maintenance cycle and revisit priority if CVSS or EPSS increases.

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-2025-43962

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 2026-05-30 0.23% 0.06% -0.17%
2 2026-05-29 0.37% 0.23% -0.14%
3 2026-05-03 — 0.37% —

Full EPSS history (10 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2025-43962

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
2.9 3.1 LOW
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
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:L)
Might cause slowdowns, glitches, or partial disruption—not a full brick.
 1.4 1.4 [email protected]
9.1 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/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: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: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.
 3.9 5.2 [email protected]

Weakness enumeration for CVE-2025-43962

OS Trackers for CVE-2025-43962

vendor priority summary link
alpine low CVE-2025-43962: 1 source package rows (libraw); 18 state rows across 2 repos (3.22-community, edge-community); fixed 0, open 18. https://security.alpinelinux.org/vuln/CVE-2025-43962
debian not yet assigned CVE-2025-43962 not yet assigned priority: Debian including 1 source packages (libraw), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2025-43962
redhat low — https://access.redhat.com/security/cve/CVE-2025-43962
suse medium CVE-2025-43962 severity moderate: SUSE including 16 source package names (libraw-devel-0.15.4-45.1, libraw-devel-0.21.1-150600.3.5.1, …), 27 product×package rows across 11 product lines (SUSE Linux Enterprise Module for Desktop Applications 15 SP6, SUSE Linux Enterprise Module for Desktop Applications 15 SP7, … (11 product lines)): Fixed 27. https://www.suse.com/security/cve/CVE-2025-43962/
ubuntu medium CVE-2025-43962 medium priority: Ubuntu including 8 source packages (darktable, dcraw, …), 71 status rows across 9 suites (bionic, focal, jammy, noble, oracular, plucky, questing, upstream, xenial): needs-triage 39, ignored 18, released 8, DNE 5, not-affected 1. https://ubuntu.com/security/CVE-2025-43962

Affected software / configurations for CVE-2025-43962

Vendor Product Version Raw CPE
libraw libraw < 0.21.4 cpe:2.3:a:libraw:libraw:*:*:*:*:*:*:*:*

References for CVE-2025-43962

cvelogic Threat Intelligence