CVE-2015-0973

HIGHNVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2022-05-17. NVD baseline CVSS 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 4%CVSS: 8.8Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Buffer overflow in the png_read_IDAT_data function in pngrutil.c in libpng before 1.5.21 and 1.6.x before 1.6.16 allows context-dependent attackers to execute arbitrary code via IDAT data with a large width, a different vulnerability than CVE-2014-9495.

CVSS v3
8.8
EG Score
8.8(medium)
EG Risk
41(Track)
EG Risk 41/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity88% × 45%
Exploitation4% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
4%
EPSS %ILE
91%
KEV
Not listed

Published

January 18, 2015

Last Modified

May 6, 2026

Advisory Details (7)

Auto-updated May 7, 2026
No patch confirmed yet.
generic

About the security content of OS X El Capitan v10.11.4 and Security Update 2016-002 - Apple Support

https://support.apple.com/HT206167
generic

NetApp Product Security

https://security.netapp.com/advisory/ntap-20240719-0005/
generic

oss-security - Re: CVE Request: libpng 1.6.15 Heap Overflow

http://www.openwall.com/lists/oss-security/2015/01/10/3
generic

oss-security - Re: CVE Request: libpng 1.6.15 Heap Overflow

http://www.openwall.com/lists/oss-security/2015/01/10/1
generic

tfpwn.com

http://tfpwn.com/files/libpng_heap_overflow_1.6.15.txt
generic

[png-mng-announce] libpng-1.5.21 and 1.6.16 are available | PNG and MNG/JNG image formats: home site

http://sourceforge.net/p/png-mng/mailman/message/33173461/
generic

About Secunia Research | Flexera

http://secunia.com/advisories/62725

Affected Packages

(8 across 4 ecosystems)
Debian:11(2)
PackageVulnerable rangeFixed inDependents
libpng1.6—1.6.16-1—
texlive-bin—2014.20140926.35254-6—
Debian:12(2)
PackageVulnerable rangeFixed inDependents
libpng1.6—1.6.16-1—
texlive-bin—2014.20140926.35254-6—
Debian:13(2)
PackageVulnerable rangeFixed inDependents
libpng1.6—1.6.16-1—
texlive-bin—2014.20140926.35254-6—
Debian:14(2)
PackageVulnerable rangeFixed inDependents
libpng1.6—1.6.16-1—
texlive-bin—2014.20140926.35254-6—

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 4× in last 7d / 21× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 140 total refreshes for this CVE.

  1. 2026-09-19 15:35 UTCEPSS rescore
  2. 2026-09-18 19:22 UTCEPSS rescore
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  17. 2026-07-23 01:16 UTCEG score recompute
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  20. 2026-07-22 14:04 UTCEPSS rescore
  21. 2026-07-21 21:18 UTCOSV refresh
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  43. 2026-07-04 16:56 UTCOSV refresh
  44. 2026-07-04 06:27 UTCEPSS rescore
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  69. 2026-06-16 04:43 UTCOSV refresh
  70. 2026-06-15 17:45 UTCEPSS rescore
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  72. 2026-06-13 22:57 UTCEPSS rescore
  73. 2026-06-12 23:09 UTCEPSS rescore
  74. 2026-06-11 13:57 UTCEPSS rescore
  75. 2026-06-10 22:15 UTCEPSS rescore

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2015-0973?
CVE-2015-0973 is a high vulnerability published on January 18, 2015. Buffer overflow in the pngreadIDAT_data function in pngrutil.c in libpng before 1.5.21 and 1.6.x before 1.6.16 allows context-dependent attackers to execute arbitrary code via IDAT data with a large width, a different vulnerability than CVE-2014-9495.
When was CVE-2015-0973 disclosed?
CVE-2015-0973 was first published in the National Vulnerability Database on January 18, 2015, with the most recent update on May 6, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2015-0973 actively exploited?
CVE-2015-0973 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 4% probability of exploitation in the next 30 days, which ranks it in the top 9.3% of all scored CVEs.
What is the CVSS score of CVE-2015-0973?
CVE-2015-0973 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2015-0973?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2015-0973, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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