Portable Network Graphics (PNG) library libpng 1.2.5 and earlier does not correctly calculate offsets, which allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a buffer overflow attack on the row buffers.
Conclusion & alert: CVE-2002-1363 is rated Moderate Risk (61.7/100): CVSS High severity, with high exploitation likelihood (EPSS 6.14%, 93th percentile). Core evidence: EPSS ranks this CVE among the most likely to be exploited in the near term. Mandatory action: High exploitation likelihood—assess exposure and prioritize remediation.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
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 | 6.79% | 6.14% | -0.65% |
| 2 | 2025-03-30 | 6.40% | 6.79% | +0.39% |
| 3 | 2025-03-29 | — | 6.40% | — |
Full EPSS history (9 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 7.5 | 2.0 | HIGH |
|
10.0 | 6.4 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
redhat
|
high | — | https://access.redhat.com/security/cve/CVE-2002-1363 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| greg_roelofs | libpng | 1.0.5 | cpe:2.3:a:greg_roelofs:libpng:1.0.5:*:*:*:*:*:*:* |
| greg_roelofs | libpng | 1.0.6 | cpe:2.3:a:greg_roelofs:libpng:1.0.6:*:*:*:*:*:*:* |
| greg_roelofs | libpng | 1.0.7 | cpe:2.3:a:greg_roelofs:libpng:1.0.7:*:*:*:*:*:*:* |
| greg_roelofs | libpng | 1.0.8 | cpe:2.3:a:greg_roelofs:libpng:1.0.8:*:*:*:*:*:*:* |
| greg_roelofs | libpng | 1.0.9 | cpe:2.3:a:greg_roelofs:libpng:1.0.9:*:*:*:*:*:*:* |
| greg_roelofs | libpng | 1.0.11 | cpe:2.3:a:greg_roelofs:libpng:1.0.11:*:*:*:*:*:*:* |
| greg_roelofs | libpng | 1.0.12 | cpe:2.3:a:greg_roelofs:libpng:1.0.12:*:*:*:*:*:*:* |
| greg_roelofs | libpng | 1.0.13 | cpe:2.3:a:greg_roelofs:libpng:1.0.13:*:*:*:*:*:*:* |
| greg_roelofs | libpng | 1.0.14 | cpe:2.3:a:greg_roelofs:libpng:1.0.14:*:*:*:*:*:*:* |
| greg_roelofs | libpng | 1.2.0 | cpe:2.3:a:greg_roelofs:libpng:1.2.0:*:*:*:*:*:*:* |
| greg_roelofs | libpng | 1.2.1 | cpe:2.3:a:greg_roelofs:libpng:1.2.1:*:*:*:*:*:*:* |
| greg_roelofs | libpng | 1.2.2 | cpe:2.3:a:greg_roelofs:libpng:1.2.2:*:*:*:*:*:*:* |
| greg_roelofs | libpng | 1.2.3 | cpe:2.3:a:greg_roelofs:libpng:1.2.3:*:*:*:*:*:*:* |
| greg_roelofs | libpng | 1.2.4 | cpe:2.3:a:greg_roelofs:libpng:1.2.4:*:*:*:*:*:*:* |