CVE-2012-4432

Exp

Use-after-free vulnerability in opngreduc.c in OptiPNG Hg and 0.7.x before 0.7.3 might allow remote attackers to execute arbitrary code via unspecified vectors related to "palette reduction."

Published: 2012-09-30 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2012-4432 is rated High Exploit Risk (78.6/100): CVSS High severity, with high exploitation likelihood (EPSS 5.24%, 91th percentile). 3 public exploit reference(s) are indexed (Exploit-DB). EPSS rose +1.60% over the last day, indicating growing attacker interest. Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

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

Public exploit references (Exploit-DB) for CVE-2012-4432

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2012-4432

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 3.64% 5.24% +1.60%
2 2025-03-30 6.00% 3.64% -2.36%
3 2025-03-29 — 6.00% —

Full EPSS history (8 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2012-4432

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 2.0 HIGH
AV:N/AC:L/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:L)
Exploitation conditions are straightforward and predictable.
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.
 10.0 6.4 [email protected]

Weakness enumeration for CVE-2012-4432

OS Trackers for CVE-2012-4432

vendor priority summary link
debian unimportant CVE-2012-4432 unimportant priority: Debian including 1 source packages (optipng), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2012-4432
gentoo normal CVE-2012-4432: 1 GLSA(s) (201404-03), 1 atom(s) (media-gfx/optipng); latest impact normal. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2012-4432
ubuntu medium CVE-2012-4432 medium priority: Ubuntu including 1 source packages (optipng), 6 status rows across 6 suites (hardy, lucid, natty, oneiric, precise, upstream): not-affected 5, released 1. https://ubuntu.com/security/CVE-2012-4432

Affected software / configurations for CVE-2012-4432

Vendor Product Version Raw CPE
optipng optipng 0.7.0 cpe:2.3:a:optipng:optipng:0.7.0:*:*:*:*:*:*:*
optipng optipng 0.7.1 cpe:2.3:a:optipng:optipng:0.7.1:*:*:*:*:*:*:*
optipng optipng 0.7.2 cpe:2.3:a:optipng:optipng:0.7.2:*:*:*:*:*:*:*
optipng optipng hg cpe:2.3:a:optipng:optipng:hg:*:*:*:*:*:*:*

References for CVE-2012-4432

cvelogic Threat Intelligence