png_create_info_struct in png.c in libpng 1.6.36 has a memory leak, as demonstrated by…
Priority LOW 32CWE-401Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-401.
Summary
png_create_info_struct in png.c in libpng 1.6.36 has a memory leak, as demonstrated by pngcp. NOTE: a third party has stated "I don't think it is libpng's job to free this buffer.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01595 75th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
Not affected: 4 products
- Red Hat Enterprise Linux 5
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
Timeline
- 2026-10-02 Threatist record created from CVE-2019-6129
- 2026-10-03 Alias added: GHSA-rrr4-g4q4-hgr3
References
More pnggroup Libpng vulnerabilities
- TI-2011-02683 Integer signedness error in the png_inflate function in pngrutil.c in libpng before… CVSS 3.1HIGH 8.8
- TI-2010-01161 Buffer overflow in pngpread.c in libpng before 1.2.44 and 1.4.x before 1.4.3, as used in… CVSS 3.1CRITICAL 9.8
- TI-2026-20746 LIBPNG has a heap buffer overflow in png_set_quantize CVSS 4.0HIGH 8.3
- TI-2025-40204 LIBPNG is vulnerable to a heap buffer overflow in `png_combine_row` triggered via `png_image_finish_read` CVSS 3.1HIGH 7.1
- TI-2025-40767 LIBPNG has an out-of-bounds read in png_image_read_composite CVSS 3.1HIGH 7.1
- TI-2025-40066 LIBPNG is vulnerable to a buffer overflow in `png_image_read_composite` via incorrect palette premultiplication CVSS 3.1HIGH 7.1
Sources
- CVE-2019-6129 · CVE Program
- CVE-2019-6129 · NVD
- FIRST EPSS
- GHSA-rrr4-g4q4-hgr3 · GitHub Advisory Database · CC BY 4.0
- CVE-2019-6129 · Red Hat security data · CC BY 4.0
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