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Fencer Vulns
high 8.8

CVE-2025-15270 json

FontForge SFD File Parsing Improper Validation of Array Index Remote Code Execution Vulnerability

published 2025-12-31 10 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-205897

cvss
8.8
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.6%
EPSS 0.6% chance of exploitation in 30 days, percentile 49%
public exploits
0
none known

Summary

FontForge SFD File Parsing Improper Validation of Array Index 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 SFD files. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated array. An attacker can leverage this vulnerability to execute code in the context of the current user. Was ZDI-CAN-28563.

Patch / fix

  • fontforge RHEL 8 20200314-7.el8_10
  • fontforge RHEL 10.1 20230101-15.el10_1
  • fontforge RHEL 9 20201107-8.el9_7
  • fontforge enterprise linux eus 10.0 20230101-15.el10_0
  • fontforge RHEL 9.4 EUS 20201107-7.el9_4
  • fontforge RHEL 9.6 EUS 20201107-8.el9_6

red hat advisories RHSA-2026:8875RHSA-2026:7677RHSA-2026:7001RHSA-2026:6631RHSA-2026:6635RHSA-2026:6628

  • fontforge openSUSE Leap 16.0 20251009-160000.2.1
  • fontforge openSUSE Tumbleweed 20251009-6.1

opensuse advisories openSUSE-SU-2026:20608-1openSUSE-SU-2026:10513-1

  • fontforge AlmaLinux 8 20200314-7.el8_10
  • fontforge AlmaLinux 9 20201107-8.el9_7
  • fontforge AlmaLinux 10 20230101-15.el10_1

almalinux advisories ALSA-2026:7677ALSA-2026:6628ALSA-2026:6631

  • fontforge Rocky Linux 8 20200314-7.el8_10
  • fontforge Rocky Linux 10 20230101-15.el10_1
  • fontforge Rocky Linux 9 20201107-8.el9_7

rocky linux advisories RLSA-2026:7677RLSA-2026:6631RLSA-2026:6628

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-2025-15270 updated cvss 8.8

fontforge: FontForge: Remote Code Execution via malicious SFD 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 20201107-7.el9_4
    fixed: vendor fix RHSA-2026:7001
  • Red Hat CodeReady Linux Builder EUS (v.9.6) fontforge 20201107-8.el9_6
    fixed: vendor fix RHSA-2026:6635
  • Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) fontforge 20201107-8.el9_7
    fixed: vendor fix RHSA-2026:6628
  • Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) fontforge 20230101-15.el10_1
    fixed: vendor fix RHSA-2026:6631
  • Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) fontforge 20230101-15.el10_0
    fixed: vendor fix RHSA-2026:8875
  • Red Hat Enterprise Linux CRB (v. 8) fontforge 20200314-7.el8_10
    fixed: vendor fix RHSA-2026:7677
  • Red Hat Enterprise Linux 7 fontforge
    not affected: vulnerable code not present

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
10 mo ago

Exploit prediction

0.61% chance of exploitation in the next 30 days, higher than 49% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.0 8.8 CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

  • FontForge FontForge

Classification

Weakness
  • CWE-129 Improper Validation of Array Index

References

Sources

Fencer Vulns 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.