How severe is CVE-2019-6129?

CVE-2019-6129 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2019-6129 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-6129?

CVE-2019-6129 affects Libpng. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-6129?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2019-6129 published?

CVE-2019-6129 was published on 2019-01-11 and last updated on 2026-06-17.

CVE-2019-6129

CVE-2019-6129 is a medium-severity vulnerability in Libpng with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-401.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 4.3
EPSS exploit prediction: 1% (69th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-401
Affected product: Libpng
Published: 2019-01-11
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2019-6129?: 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.
How severe is CVE-2019-6129?: CVE-2019-6129 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2019-6129 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-6129?: CVE-2019-6129 affects Libpng. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-6129?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2019-6129 published?: CVE-2019-6129 was published on 2019-01-11 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:libpng:libpng:1.6.36:*:*:*:*:*:*:*

More vulnerabilities in Libpng

CVE-2017-12652 — Critical (CVSS 9.8): libpng before 1.6.32 does not properly check the length of chunks against the user limit.
CVE-2010-1205 — Critical (CVSS 9.8): Buffer overflow in pngpread.c in libpng before 1.2.44 and 1.4.x before 1.4.3, as used in progressive applications,…
CVE-2018-14550 — High (CVSS 8.8): An issue has been found in third-party PNM decoding associated with libpng 1.6.35. It is a stack-based buffer overflow…
CVE-2015-8540 — High (CVSS 8.8): Integer underflow in the png_check_keyword function in pngwutil.c in libpng 0.90 through 0.99, 1.0.x before 1.0.66,…
CVE-2015-0973 — High (CVSS 8.8): 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…
CVE-2014-9495 — High (CVSS 8.8): Heap-based buffer overflow in the png_combine_row function in libpng before 1.5.21 and 1.6.x before 1.6.16, when…

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