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NVD / CVE Program· CNA mitre

CVE-2021-44648: GNOME gdk-pixbuf 2.42.6 is vulnerable to a heap-buffer overflow vulnerability when decoding the lzw compressed stream of image data in GIF f

Noroxi assessment

Priority: Monitor (action score 36/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 1.9% (FIRST EPSS); higher than 79.7% of all records.
  • Anyone who can reach it over the internet can trigger it. No account or password is required. A user must open a link or visit a page. No special conditions are required; it is repeatable.
  • Fixed version: gdk-pixbuf2 (AlmaLinux:9) 2.42.6-3.el9; gdk-pixbuf2-devel (AlmaLinux:9) 2.42.6-3.el9; gdk-pixbuf2-modules (AlmaLinux:9) 2.42.6-3.el9.

Low priority for now. Upgrade to gdk-pixbuf2 (AlmaLinux:9) 2.42.6-3.el9; gdk-pixbuf2-devel (AlmaLinux:9) 2.42.6-3.el9; gdk-pixbuf2-modules (AlmaLinux:9) 2.42.6-3.el9 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

GNOME gdk-pixbuf 2.42.6 is vulnerable to a heap-buffer overflow vulnerability when decoding the lzw compressed stream of image data in GIF files with lzw minimum code size equals to 12.

HighCVSS 8.8 · v3.1—No exploit Fix available
Published
Jan 12, 2022
Updated
Jun 17, 2026
EPSS
1.9% · 79th percentile

Report tools

JSON

Action score

36

Monitor

Low priority for now.

CVSS
35 / 40 · 8.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
1 / 30 · 1.9%

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

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When you'll hear from us

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  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
gnomegdkpixbuf
fedoraprojectfedora
debiandebian linux

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • debian debian linux11.0
  • fedoraproject fedora34
  • fedoraproject fedora35
  • gnome gdkpixbuf2.42.6

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
AlmaLinux:9gdk-pixbuf2before 2.42.6-3.el92.42.6-3.el9
AlmaLinux:9gdk-pixbuf2-develbefore 2.42.6-3.el92.42.6-3.el9
AlmaLinux:9gdk-pixbuf2-modulesbefore 2.42.6-3.el92.42.6-3.el9
Alpine:v3.15gdk-pixbufbefore 2.42.8-r02.42.8-r0
Debian:11gdk-pixbufbefore 2.42.2+dfsg-1+deb11u12.42.2+dfsg-1+deb11u1
Debian:12gdk-pixbufbefore 2.42.9+dfsg-12.42.9+dfsg-1
openSUSE:Leap 15.4gdk-pixbufbefore 2.42.9-150400.5.6.12.42.9-150400.5.6.1
openSUSE:Leap Micro 5.2gdk-pixbufbefore 2.40.0-150200.3.9.12.40.0-150200.3.9.1
openSUSE:Tumbleweedgdk-pixbufbefore 2.42.9-3.12.42.9-3.1
Red Hat:enterprise_linux:9::appstreamgdk-pixbuf2before 0:2.42.6-3.el90:2.42.6-3.el9
Red Hat:enterprise_linux:9::appstreamgdk-pixbuf2-debuginfobefore 0:2.42.6-3.el90:2.42.6-3.el9
Red Hat:enterprise_linux:9::appstreamgdk-pixbuf2-debugsourcebefore 0:2.42.6-3.el90:2.42.6-3.el9
Red Hat:enterprise_linux:9::appstreamgdk-pixbuf2-develbefore 0:2.42.6-3.el90:2.42.6-3.el9
Red Hat:enterprise_linux:9::appstreamgdk-pixbuf2-devel-debuginfobefore 0:2.42.6-3.el90:2.42.6-3.el9
Red Hat:enterprise_linux:9::appstreamgdk-pixbuf2-modulesbefore 0:2.42.6-3.el90:2.42.6-3.el9
Red Hat:enterprise_linux:9::appstreamgdk-pixbuf2-modules-debuginfobefore 0:2.42.6-3.el90:2.42.6-3.el9
Red Hat:enterprise_linux:9::appstreamgdk-pixbuf2-tests-debuginfobefore 0:2.42.6-3.el90:2.42.6-3.el9
SUSE:Linux Enterprise Module for Basesystem 15 SP3gdk-pixbufbefore 2.40.0-150200.3.9.12.40.0-150200.3.9.1
SUSE:Linux Enterprise Module for Basesystem 15 SP4gdk-pixbufbefore 2.42.9-150400.5.6.12.42.9-150400.5.6.1

Same product

gnome: all records

Other highest-scoring records for the same primary product.

  • CVE-2004-0783Stack-based buffer overflow in xpm_extract_color (io-xpm.c) in the XPM image decoder for gtk+ 2.4.4 (gtk2) and earlier, and gdk-pixbuf befor
    33Monitor
  • CVE-2004-0782Integer overflow in pixbuf_create_from_xpm (io-xpm.c) in the XPM image decoder for gtk+ 2.4.4 (gtk2) and earlier, and gdk-pixbuf before 0.22
    33Monitor
  • CVE-2005-2975io-xpm.c in the gdk-pixbuf XPM image rendering library in GTK+ before 2.8.7 allows attackers to cause a denial of service (infinite loop) vi
    32Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2004-0788Oct 20, 2004 · Integer overflow in the ICO image decoder for (1) gdk-pixbuf before 0.22 and (2) gtk2 before 2.2.4 allows remote attackers to cause a denial
    22Monitor
  • ← EarlierCVE-2005-2976Nov 18, 2005 · Integer overflow in io-xpm.c in gdk-pixbuf 0.22.0 in GTK+ before 2.8.7 allows attackers to cause a denial of service (crash) or execute arbi
    31Monitor
  • Later →CVE-2022-48622Jan 26, 2024 · In GNOME GdkPixbuf (aka gdk-pixbuf) through 2.42.10, the ANI (Windows animated cursor) decoder encounters heap memory corruption (in ani_loa
    31Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
almalinux:gdk-pixbuf22.42.6-3.el9 · AlmaLinux:9Package registry (OSV)
almalinux:gdk-pixbuf2-devel2.42.6-3.el9 · AlmaLinux:9Package registry (OSV)
almalinux:gdk-pixbuf2-modules2.42.6-3.el9 · AlmaLinux:9Package registry (OSV)
alpine:gdk-pixbuf2.42.8-r0 · Alpine:v3.15Package registry (OSV)
debian:gdk-pixbuf2.42.9+dfsg-1 · Debian:12Package registry (OSV)
opensuse:gdk-pixbuf2.42.9-150400.5.6.1 · openSUSE:Leap 15.4Package registry (OSV)
red hat:gdk-pixbuf20:2.42.6-3.el9 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:gdk-pixbuf2-debuginfo0:2.42.6-3.el9 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:gdk-pixbuf2-debugsource0:2.42.6-3.el9 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:gdk-pixbuf2-devel0:2.42.6-3.el9 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:gdk-pixbuf2-devel-debuginfo0:2.42.6-3.el9 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:gdk-pixbuf2-modules0:2.42.6-3.el9 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:gdk-pixbuf2-modules-debuginfo0:2.42.6-3.el9 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:gdk-pixbuf2-tests-debuginfo0:2.42.6-3.el9 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
suse:gdk-pixbuf2.42.9-150400.5.6.1 · SUSE:Linux Enterprise Module for Basesystem 15 SP4Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • A user must open a link or visit a page.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
Required
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-787 · Out-of-bounds Write

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (2 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records