CVE-2012-4432

Status: ModifiedHigh (7.5)—

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."

CVSS

Version: 2.0
Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P
Base score: 7.5

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days: 5.24%
Percentile among all scored CVEs: 92
Score date: 10/3/2026

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (1)

Optipng — Optipng

CWEs

CWE-399

References

Raw JSON (NVD)

Show

{
  "id": "CVE-2012-4432",
  "cveTags": [],
  "metrics": {
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        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 7.5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 6.4,
        "baseSeverity": "HIGH",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
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  "affected": [
    {
      "source": "secalert@redhat.com",
      "affectedData": [
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          "vendor": "n/a",
          "product": "n/a",
          "versions": [
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              "status": "affected",
              "version": "n/a"
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  ],
  "published": "2012-10-01T03:26:16.353",
  "references": [
    {
      "url": "http://optipng.hg.sourceforge.net/hgweb/optipng/optipng/rev/f1d5d44670a2",
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    {
      "url": "http://sourceforge.net/news/?group_id=151404",
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    {
      "url": "http://www.openwall.com/lists/oss-security/2012/09/17/5",
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      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/78743",
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    {
      "url": "http://www.securityfocus.com/bid/55566",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/78743",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-399"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "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.\""
    },
    {
      "lang": "es",
      "value": "Vulnerabilidad de error en la gestión de recursos en opngreduc.c en OptiPNG Hg y v0.7.3 podría permitir a atacantes remotos ejecutar código de su elección a través de vectores no especificados, relacionados con \"reducción de paleta\""
    }
  ],
  "lastModified": "2026-06-16T23:45:00.620",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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              "vulnerable": true,
              "matchCriteriaId": "7DFF3C50-BFDC-4E68-9415-21CF453293ED"
            }
          ],
          "operator": "OR"
        }
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  ],
  "sourceIdentifier": "secalert@redhat.com"
}