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CVE-2025-7345· NVD / CVE Program· CNA redhat

Gdk‑pixbuf: heap‑buffer‑overflow in gdk‑pixbuf

Noroxi assessment

Priority: Monitor (action score 30/100)

  • 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: 1.3% (FIRST EPSS); higher than 70.8% of all records.
  • Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
  • According to CISA the attack is automatable: targets can be found by mass scanning.
  • Fixed version: gitlab.gnome.org/GNOME/ gdk-pixbuf 2.43.4; azl3 gdk-pixbuf2 2.42.10-2 on Azure Linux 3.0 2.42.10-4; azl3 gdk-pixbuf2 2.42.10-4 on Azure Linux 3.0 2.42.10-4.

Low priority for now. Upgrade to gitlab.gnome.org/GNOME/ gdk-pixbuf 2.43.4; azl3 gdk-pixbuf2 2.42.10-2 on Azure Linux 3.0 2.42.10-4; azl3 gdk-pixbuf2 2.42.10-4 on Azure Linux 3.0 2.42.10-4 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

A flaw exists in gdk‑pixbuf within the gdk_pixbuf__jpeg_image_load_increment function (io-jpeg.c) and in glib’s g_base64_encode_step (glib/gbase64.c). When processing maliciously crafted JPEG images, a heap buffer overflow can occur during Base64 encoding, allowing out-of-bounds reads from heap memory, potentially causing application crashes or arbitrary code execution.

HighCVSS 7.5 · v3.1—No exploit Fix available
Published
Jul 8, 2025
Updated
Jun 30, 2026
EPSS
1.3% · 70th percentile

Report tools

JSON

Action score

30

Monitor

Low priority for now.

CVSS
30 / 40 · 7.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 1.3%

CISA SSVC decision

Exploitation
proof of concept
Automatable
yes
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · redhat
7.5
NVD has not scored this yet; the score shown is the CNA’s.

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

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

If any of these changes, we'll tell you in the daily email digest.

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When you'll hear from us

  • when it enters CISA KEV
  • 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.

—

Versions reported by the vendor

Affected version ranges reported by the assigning authority (redhat). Independent of NVD's CPE analysis and usually ahead of it.

  • gitlab.gnome.org/GNOME/ gdk-pixbuf

    • before 2.43.4affected · semver

  • Red Hat Red Hat Enterprise Linux 10

    • 0:2.42.12-4.el10_0 and laternot affected · rpm

  • Red Hat Red Hat Enterprise Linux 6

    • all versionsunknown

  • Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support

    • 0:2.36.12-4.el7_9 and laternot affected · rpm

  • Red Hat Red Hat Enterprise Linux 8

    • 0:2.36.12-7.el8_10 and laternot affected · rpm
    • 0:2.36.12-7.el8_10 and laternot affected · rpm

  • Red Hat Red Hat Enterprise Linux 8.2 Advanced Update Support

    • 0:2.36.12-6.el8_2 and laternot affected · rpm

  • Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support

    • 0:2.36.12-6.el8_4 and laternot affected · rpm

  • Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On

    • 0:2.36.12-6.el8_4 and laternot affected · rpm

  • Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support

    • 0:2.36.12-6.el8_6 and laternot affected · rpm

  • Red Hat Red Hat Enterprise Linux 8.6 Telecommunications Update Service

    • 0:2.36.12-6.el8_6 and laternot affected · rpm

  • Red Hat Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions

    • 0:2.36.12-6.el8_6 and laternot affected · rpm

  • Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service

    • 0:2.36.12-6.el8_8 and laternot affected · rpm

Package-level exposure

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

EcosystemPackageAffected rangeFix
AlmaLinux:8gdk-pixbuf2before 2.36.12-7.el8_102.36.12-7.el8_10
AlmaLinux:8gdk-pixbuf2-develbefore 2.36.12-7.el8_102.36.12-7.el8_10
AlmaLinux:8gdk-pixbuf2-modulesbefore 2.36.12-7.el8_102.36.12-7.el8_10
AlmaLinux:8gdk-pixbuf2-xlibbefore 2.36.12-7.el8_102.36.12-7.el8_10
AlmaLinux:8gdk-pixbuf2-xlib-develbefore 2.36.12-7.el8_102.36.12-7.el8_10
Debian:11gdk-pixbufbefore 2.42.2+dfsg-1+deb11u42.42.2+dfsg-1+deb11u4
Debian:12gdk-pixbufbefore 2.42.10+dfsg-1+deb12u32.42.10+dfsg-1+deb12u3
Debian:13gdk-pixbufbefore 2.42.12+dfsg-42.42.12+dfsg-4
openSUSE:Leap 16.0gdk-pixbufbefore 2.42.12-160000.3.12.42.12-160000.3.1
openSUSE:Tumbleweedgdk-pixbufbefore 2.42.12-5.12.42.12-5.1
Red Hat:enterprise_linux:10.0gdk-pixbuf2before 0:2.42.12-4.el10_00:2.42.12-4.el10_0
Red Hat:enterprise_linux:10.0gdk-pixbuf2-debuginfobefore 0:2.42.12-4.el10_00:2.42.12-4.el10_0
Red Hat:enterprise_linux:10.0gdk-pixbuf2-debugsourcebefore 0:2.42.12-4.el10_00:2.42.12-4.el10_0
Red Hat:enterprise_linux:10.0gdk-pixbuf2-develbefore 0:2.42.12-4.el10_00:2.42.12-4.el10_0
Red Hat:enterprise_linux:10.0gdk-pixbuf2-devel-debuginfobefore 0:2.42.12-4.el10_00:2.42.12-4.el10_0
Red Hat:enterprise_linux:10.0gdk-pixbuf2-modulesbefore 0:2.42.12-4.el10_00:2.42.12-4.el10_0
Red Hat:enterprise_linux:10.0gdk-pixbuf2-modules-debuginfobefore 0:2.42.12-4.el10_00:2.42.12-4.el10_0
Red Hat:enterprise_linux:10.0gdk-pixbuf2-tests-debuginfobefore 0:2.42.12-4.el10_00:2.42.12-4.el10_0
Red Hat:enterprise_linux:8::appstreamgdk-pixbuf2-debuginfobefore 0:2.36.12-7.el8_100:2.36.12-7.el8_10
Red Hat:enterprise_linux:8::appstreamgdk-pixbuf2-debugsourcebefore 0:2.36.12-7.el8_100:2.36.12-7.el8_10
Red Hat:enterprise_linux:8::appstreamgdk-pixbuf2-develbefore 0:2.36.12-7.el8_100:2.36.12-7.el8_10
Red Hat:enterprise_linux:8::appstreamgdk-pixbuf2-devel-debuginfobefore 0:2.36.12-7.el8_100:2.36.12-7.el8_10
Red Hat:enterprise_linux:8::appstreamgdk-pixbuf2-modulesbefore 0:2.36.12-7.el8_100:2.36.12-7.el8_10
Red Hat:enterprise_linux:8::appstreamgdk-pixbuf2-modules-debuginfobefore 0:2.36.12-7.el8_100:2.36.12-7.el8_10

+88

Same product

red hat: all records

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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
gitlab.gnome.org/GNOME/ gdk-pixbuf2.43.4Vendor (CNA)
azl3 gdk-pixbuf2 2.42.10-2 on Azure Linux 3.02.42.10-4 · CBL-Mariner ReleasesMicrosoft (MSRC)
azl3 gdk-pixbuf2 2.42.10-4 on Azure Linux 3.02.42.10-4 · CBL-Mariner ReleasesMicrosoft (MSRC)
cbl2 gdk-pixbuf2 2.40.0-6 on CBL Mariner 2.02.40.0-8 · CBL-Mariner ReleasesMicrosoft (MSRC)
cm2 gdk-pixbuf2 2.40.0-8 on CBL Mariner 2.02.40.0-8 · CBL-Mariner ReleasesMicrosoft (MSRC)
almalinux:gdk-pixbuf22.36.12-7.el8_10 · AlmaLinux:8Package registry (OSV)
almalinux:gdk-pixbuf2-devel2.36.12-7.el8_10 · AlmaLinux:8Package registry (OSV)
almalinux:gdk-pixbuf2-modules2.36.12-7.el8_10 · AlmaLinux:8Package registry (OSV)
almalinux:gdk-pixbuf2-xlib2.36.12-7.el8_10 · AlmaLinux:8Package registry (OSV)
almalinux:gdk-pixbuf2-xlib-devel2.36.12-7.el8_10 · AlmaLinux:8Package registry (OSV)
debian:gdk-pixbuf2.42.10+dfsg-1+deb12u3 · Debian:12Package registry (OSV)
opensuse:gdk-pixbuf2.42.12-150600.3.8.1 · openSUSE:Leap 15.6Package registry (OSV)
red hat:gdk-pixbuf20:2.42.6-6.el9_6 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:gdk-pixbuf2-debuginfo0:2.42.6-6.el9_6 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:gdk-pixbuf2-debugsource0:2.42.6-6.el9_6 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:gdk-pixbuf2-devel0:2.42.6-6.el9_6 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:gdk-pixbuf2-devel-debuginfo0:2.42.6-6.el9_6 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:gdk-pixbuf2-modules0:2.42.6-6.el9_6 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:gdk-pixbuf2-modules-debuginfo0:2.42.6-6.el9_6 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:gdk-pixbuf2-tests0:2.36.12-4.el7_9 · Red Hat:rhel_els:7Package registry (OSV)
red hat:gdk-pixbuf2-tests-debuginfo0:2.42.6-6.el9_6 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:gdk-pixbuf2-xlib0:2.36.12-7.el8_10 · Red Hat:enterprise_linux:8::crbPackage registry (OSV)
red hat:gdk-pixbuf2-xlib-debuginfo0:2.36.12-7.el8_10 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
red hat:gdk-pixbuf2-xlib-devel0:2.36.12-7.el8_10 · Red Hat:enterprise_linux:8::crbPackage registry (OSV)
rocky linux:gdk-pixbuf20:2.42.6-6.el9_6 · Rocky Linux:9Package registry (OSV)
suse:gdk-pixbuf2.42.12-150600.3.8.1 · SUSE:Linux Enterprise Module for Basesystem 15 SP6Package 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.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

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.

Variant candidates

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

  • CVE-2024-5564403 days apartLibndp: buffer overflow in route information length field
    32Monitor
  • CVE-2026-80186413 days apartBluez: stack overflow in name2utf8 causes dos and potential code execution
    30Monitor

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.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

CWE-120 · Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

CVSS vector

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

nvd-secondary

Root cause

When data is copied, the source length is not compared with the size of the destination buffer. Excess data overwrites adjacent memory.

The bug in code

The whole CWE-120 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

c
char buf[256];memcpy(buf, pkt->data, pkt->len);

Fixed

c
char buf[256];if (pkt->len > sizeof(buf)) {  return -EINVAL;}memcpy(buf, pkt->data, pkt->len);

Attack context

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

ATT&CK techniques

—

Change log

  1. Fix✗ → ✓

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

References

Show all references (14 more)

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

All records