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Fencer Intel
high 7.8

CVE-2025-15279 json

FontForge GUtils BMP File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability

published 10mo ago modified 4mo ago also EUVD-2025-205887

cvss
7.8
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 21%
public exploits
0
none known

Summary

FontForge GUtils BMP File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of FontForge. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.

The specific flaw exists within the parsing of pixels within BMP files. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current user. Was ZDI-CAN-27517.

Patch / fix

  • fontforge RHEL 8 20200314-7.el8_10
  • fontforge RHEL 10.1 20230101-14.el10_1
  • fontforge RHEL 9 20201107-7.el9_7
  • fontforge RHEL 7 ELS 20120731b-14.el7_9
  • fontforge RHEL 9.4 EUS 20201107-6.el9_4
  • fontforge enterprise linux eus 10.0 20230101-14.el10_0
  • fontforge RHEL 9.6 EUS 20201107-7.el9_6

red hat advisories RHSA-2026:8937RHSA-2026:7677RHSA-2026:2566RHSA-2026:2232RHSA-2026:2230RHSA-2026:2213

  • fontforge SLES for SAP 15 SP6, SLES for SAP 15 SP5, SLES for SAP 15 SP4 +8 more 20200314-150200.3.18.1
  • fontforge SLES for SAP applications 16.0, SLES 16.0 20251009-160000.1.1

suse advisories SUSE-SU-2026:2739-1SUSE-SU-2026:20435-1

  • fontforge openSUSE Leap 16.0 20251009-160000.1.1
  • fontforge openSUSE Tumbleweed 20251009-4.1

opensuse advisories openSUSE-SU-2026:20235-1openSUSE-SU-2026:10122-1

  • fontforge AlmaLinux 8 20200314-7.el8_10
  • fontforge AlmaLinux 10 20230101-14.el10_1
  • fontforge AlmaLinux 9 20201107-7.el9_7

almalinux advisories ALSA-2026:7677ALSA-2026:2230ALSA-2026:2039

  • fontforge Rocky Linux 8 20200314-7.el8_10
  • fontforge Rocky Linux 10 20230101-14.el10_1
  • fontforge Rocky Linux 9 20201107-7.el9_7

rocky linux advisories RLSA-2026:7677RLSA-2026:2230RLSA-2026:2039

Is CVE-2025-15279 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2025-15279 updated cvss 7.8

fontforge: FontForge: Remote Code Execution via heap-based buffer overflow in BMP file parsing

  • Red Hat Enterprise Linux 6 fontforge
    affected: workaround, no fix planned “Out of support scope”
  • Red Hat CodeReady Linux Builder EUS (v.9.4) fontforge 20201107-6.el9_4
    fixed: vendor fix RHSA-2026:2566
  • Red Hat CodeReady Linux Builder EUS (v.9.6) fontforge 20201107-7.el9_6
    fixed: vendor fix RHSA-2026:2213
  • Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) fontforge 20201107-7.el9_7
    fixed: vendor fix RHSA-2026:2039
  • Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) fontforge 20230101-14.el10_1
    fixed: vendor fix RHSA-2026:2230
  • Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) fontforge 20230101-14.el10_0
    fixed: vendor fix RHSA-2026:2232
  • Red Hat Enterprise Linux CRB (v. 8) fontforge 20200314-7.el8_10
    fixed: vendor fix RHSA-2026:7677
  • Red Hat Enterprise Linux Server Optional (v. 7 ELS) fontforge 20120731b-14.el7_9
    fixed: vendor fix RHSA-2026:8937

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
10mo ago

Exploit prediction

0.29% chance of exploitation in the next 30 days, higher than 21% of all scored CVEs (FIRST EPSS, 2026-11-11).

CVSS scores

assigned by version score vector
CNA 3.0 7.8 CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

  • FontForge FontForge

Classification

Weakness
  • CWE-122 Heap-based Buffer Overflow

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.