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CVE-2012-4432

25
FAUCET Score

CVE-2012-4432 is a use-after-free vulnerability in OptiPNG Hg and versions 0.7.x before 0.7.3, specifically within the opngreduc.c component, potentially allowing remote attackers to execute arbitrary code through unspecified vectors related to "palette reduction." With a CVSS score of 7.5, this vulnerability is considered high severity, indicating a low attack complexity and potential for partial impact on confidentiality, integrity, and availability. There is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
0.7.0CPE matchmatch criteria
cpe:2.3:a:optipng:optipng:0.7.0:*:*:*:*:*:*:*
0.7.1CPE matchmatch criteria
cpe:2.3:a:optipng:optipng:0.7.1:*:*:*:*:*:*:*
0.7.2CPE matchmatch criteria
cpe:2.3:a:optipng:optipng:0.7.2:*:*:*:*:*:*:*
hgCPE matchmatch criteria
cpe:2.3:a:optipng:optipng:hg:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.5HIGH

AV:N/AC:L/Au:N/C:P/I:P/A:P

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
5.24%
Probability of exploitation in next 30 days
EPSS Percentile
91.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0524 is in the 85th percentile among its peer group of 51,506 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

optipng.hg.sourceforge.net / hgweb/optipng/optipng/rev/f1d5d44670a2
Exploit
optipng.sourceforge.net
PatchVendor Advisory
secunia.com / advisories/50654
Vendor Advisory
exchange.xforce.ibmcloud.com / vulnerabilities/78743
sourceforge.net / news
openwall.com / lists/oss-security/2012/09/17/5
ExploitPatch
openwall.com / lists/oss-security/2012/09/18/2
ExploitPatch
securityfocus.com / bid/55566