CVE-2025-15278 | FontForge GUtils XBM File Parsing Integer Overflow Remote Code Execution Vulnerability

FontForge GUtils XBM File Parsing Integer 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 XBM files. The issue results from the lack of proper validation of user-supplied data, which can result in an integer overflow before allocating a buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-27865.

Published: 2025-12-31 Last update: 2026-01-07 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2025-15278 is rated Low Risk (36.7/100): CVSS High severity, with low exploitation likelihood (EPSS 0.05%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2025-15278

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-01-06 0.05% 0.05% +0.00%
2 2025-12-31 — 0.05% —

Full EPSS history (2 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2025-15278

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.8 3.0 HIGH
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.8 5.9 [email protected]

Weakness enumeration for CVE-2025-15278

OS Trackers for CVE-2025-15278

vendor priority summary link
alpine — CVE-2025-15278: 1 source package rows (fontforge); 5 state rows across 2 repos (3.23-community, edge-community); fixed 0, open 5. https://security.alpinelinux.org/vuln/CVE-2025-15278
debian not yet assigned CVE-2025-15278 not yet assigned priority: Debian including 1 source packages (fontforge), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): open 5. https://security-tracker.debian.org/tracker/CVE-2025-15278
redhat high — https://access.redhat.com/security/cve/CVE-2025-15278
suse high — https://www.suse.com/security/cve/CVE-2025-15278/
ubuntu medium CVE-2025-15278 medium priority: Ubuntu including 1 source packages (fontforge), 8 status rows across 8 suites (bionic, focal, jammy, noble, plucky, questing, upstream, xenial): deferred 6, ignored 1, needed 1. https://ubuntu.com/security/CVE-2025-15278

Affected software / configurations for CVE-2025-15278

Vendor Product Version Raw CPE
fontforge fontforge 20251009 cpe:2.3:a:fontforge:fontforge:20251009:*:*:*:*:*:*:*

References for CVE-2025-15278

cvelogic Threat Intelligence