How severe is CVE-2026-22801?

CVE-2026-22801 has a CVSS 3.x base score of 6.8, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability high.

Is CVE-2026-22801 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (2nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-22801?

CVE-2026-22801 affects Libpng. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-22801?

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

Does CVE-2026-22801 have an EU (EUVD) identifier?

Yes. CVE-2026-22801 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-2416.

When was CVE-2026-22801 published?

CVE-2026-22801 was published on 2026-01-12 and last updated on 2026-06-17.

CVE-2026-22801

CVE-2026-22801 is a medium-severity vulnerability in Libpng with a CVSS 3.x base score of 6.8. 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-125.

Key facts

Severity: Medium (CVSS 3.x base score 6.8)
EPSS exploit prediction: 0% (2nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-2416
Weakness: CWE-125
Affected product: Libpng
Published: 2026-01-12
Last modified: 2026-06-17

Description

LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network Graphics) raster image files. From 1.6.26 to 1.6.53, there is an integer truncation in the libpng simplified write API functions png_write_image_16bit and png_write_image_8bit causes heap buffer over-read when the caller provides a negative row stride (for bottom-up image layouts) or a stride exceeding 65535 bytes. The bug was introduced in libpng 1.6.26 (October 2016) by casts added to silence compiler warnings on 16-bit systems. This vulnerability is fixed in 1.6.54.

Frequently asked questions

What is CVE-2026-22801?: LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network Graphics) raster image files. From 1.6.26 to 1.6.53, there is an integer truncation in the libpng simplified write API functions png_write_image_16bit and png_write_image_8bit causes heap buffer over-read when the caller provides a negative row stride (for bottom-up image layouts) or a stride exceeding 65535 bytes. The bug was introduced in libpng 1.6.26 (October 2016) by casts added to silence compiler warnings on 16-bit systems. This vulnerability is fixed in 1.6.54.
How severe is CVE-2026-22801?: CVE-2026-22801 has a CVSS 3.x base score of 6.8, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability high.
Is CVE-2026-22801 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (2nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-22801?: CVE-2026-22801 affects Libpng. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-22801?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-22801 have an EU (EUVD) identifier?: Yes. CVE-2026-22801 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-2416.
When was CVE-2026-22801 published?: CVE-2026-22801 was published on 2026-01-12 and last updated on 2026-06-17.

References

https://github.com/pnggroup/libpng/security/advisories/GHSA-vgjq-8cw5-ggw8

Affected products (1)

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

More vulnerabilities in Libpng

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Other CWE-125 (Out-of-bounds Read) vulnerabilities

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