How severe is CVE-2021-46829?

CVE-2021-46829 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-46829 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-46829?

CVE-2021-46829 primarily affects Gnome Gdk-pixbuf. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-46829?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2021-46829 published?

CVE-2021-46829 was published on 2022-07-24 and last updated on 2026-06-17.

CVE-2021-46829

CVE-2021-46829 is a high-severity vulnerability in Gnome Gdk-pixbuf with a CVSS 3.x base score of 7.8. 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-190.

Key facts

Severity: High (CVSS 3.x base score 7.8)
EPSS exploit prediction: 1% (50th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-190
Affected product: Gnome Gdk-pixbuf
Published: 2022-07-24
Last modified: 2026-06-17

Description

GNOME GdkPixbuf (aka GDK-PixBuf) before 2.42.8 allows a heap-based buffer overflow when compositing or clearing frames in GIF files, as demonstrated by io-gif-animation.c composite_frame. This overflow is controllable and could be abused for code execution, especially on 32-bit systems.

Frequently asked questions

What is CVE-2021-46829?: GNOME GdkPixbuf (aka GDK-PixBuf) before 2.42.8 allows a heap-based buffer overflow when compositing or clearing frames in GIF files, as demonstrated by io-gif-animation.c composite_frame. This overflow is controllable and could be abused for code execution, especially on 32-bit systems.
How severe is CVE-2021-46829?: CVE-2021-46829 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-46829 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-46829?: CVE-2021-46829 primarily affects Gnome Gdk-pixbuf. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-46829?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-46829 published?: CVE-2021-46829 was published on 2022-07-24 and last updated on 2026-06-17.

References

Affected products (3)

cpe:2.3:a:gnome:gdk-pixbuf:*:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*

More vulnerabilities in Gnome Gdk-pixbuf

CVE-2011-2897 — Critical (CVSS 9.8): gdk-pixbuf through 2.31.1 has GIF loader buffer overflow when initializing decompression tables due to an input…
CVE-2021-20240 — High (CVSS 8.8): A flaw was found in gdk-pixbuf in versions before 2.42.0. An integer wraparound leading to an out of bounds write can…
CVE-2017-1000422 — High (CVSS 8.8): Gnome gdk-pixbuf 2.36.8 and older is vulnerable to several integer overflow in the gif_get_lzw function resulting in…
CVE-2017-12447 — High (CVSS 7.8): GdkPixBuf (aka gdk-pixbuf), possibly 2.32.2, as used by GNOME Nautilus 3.14.3 on Ubuntu 16.04, allows attackers to…
CVE-2017-2870 — High (CVSS 7.8): An exploitable integer overflow vulnerability exists in the tiff_image_parse functionality of Gdk-Pixbuf 2.36.6 when…
CVE-2017-2862 — High (CVSS 7.8): An exploitable heap overflow vulnerability exists in the gdk_pixbuf__jpeg_image_load_increment functionality of…

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Other CWE-190 (Integer Overflow or Wraparound) vulnerabilities

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CVE-2025-64721 — Critical (CVSS 10.0): Sandboxie is a sandbox-based isolation software for 32-bit and 64-bit Windows NT-based operating systems. In versions…
CVE-2015-5108 — Critical (CVSS 10.0): Integer overflow in Adobe Reader and Acrobat 10.x before 10.1.15 and 11.x before 11.0.12, Acrobat and Acrobat Reader DC…
CVE-2015-5097 — Critical (CVSS 10.0): Integer overflow in Adobe Reader and Acrobat 10.x before 10.1.15 and 11.x before 11.0.12, Acrobat and Acrobat Reader DC…
CVE-2013-2555 — Critical (CVSS 10.0): Integer overflow in Adobe Flash Player before 10.3.183.75 and 11.x before 11.7.700.169 on Windows and Mac OS X, before…

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