CVE-2012-4025

Integer overflow in the queue_init function in unsquashfs.c in unsquashfs in Squashfs 4.2 and earlier allows remote attackers to execute arbitrary code via a crafted block_log field in the superblock of a .sqsh file, leading to a heap-based buffer overflow.

Published: 2012-07-19 Last update: 2026-04-29 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2012-4025 is rated Moderate Risk (54.2/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 2.34%). 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-2012-4025

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 2025-03-30 4.54% 2.34% -2.20%
2 2025-03-29 2.34% 4.54% +2.20%
3 2025-03-17 — 2.34% —

Full EPSS history (9 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2012-4025

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.8 2.0 MEDIUM
AV:N/AC:M/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 8.6 6.4 [email protected]

Weakness enumeration for CVE-2012-4025

OS Trackers for CVE-2012-4025

vendor priority summary link
debian low CVE-2012-4025 low priority: Debian including 1 source packages (squashfs-tools), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2012-4025
gentoo normal CVE-2012-4025: 1 GLSA(s) (201612-40), 1 atom(s) (sys-fs/squashfs-tools); latest impact normal. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2012-4025
redhat medium — https://access.redhat.com/security/cve/CVE-2012-4025
suse medium CVE-2012-4025 severity moderate: SUSE including 10 source package names (squashfs-4.3-1.15, squashfs-4.3-1.29, …), 24 product×package rows across 24 product lines (SUSE Linux Enterprise Desktop 12, SUSE Linux Enterprise Desktop 12 SP1, … (24 product lines)): Fixed 24. https://www.suse.com/security/cve/CVE-2012-4025/
ubuntu low CVE-2012-4025 low priority: Ubuntu including 1 source packages (squashfs-tools), 16 status rows across 16 suites (hardy, lucid, natty, oneiric, precise, quantal, raring, saucy, trusty, upstream, utopic, vivid, wily, xenial, yakkety, zesty): ignored 10, not-affected 3, DNE 2, released 1. https://ubuntu.com/security/CVE-2012-4025

Affected software / configurations for CVE-2012-4025

Vendor Product Version Raw CPE
squashfs_project squashfs <= 4.2 cpe:2.3:a:squashfs_project:squashfs:*:*:*:*:*:*:*:*

References for CVE-2012-4025

cvelogic Threat Intelligence