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.
Conclusion & alert: CVE-2025-15279 is rated Low Risk (37.3/100): CVSS High severity, with low exploitation likelihood (EPSS 0.26%). Mandatory action: 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.
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 | 2026-06-15 | 0.06% | 0.26% | +0.20% |
| 2 | 2026-06-10 | 0.05% | 0.06% | +0.01% |
| 3 | 2026-05-28 | — | 0.05% | — |
Full EPSS history (5 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 7.8 | 3.0 | HIGH |
|
1.8 | 5.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
alpine
|
— | CVE-2025-15279: 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-2025-15279 |
debian
|
not yet assigned | CVE-2025-15279 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-2025-15279 |
redhat
|
high | — | https://access.redhat.com/security/cve/CVE-2025-15279 |
suse
|
high | CVE-2025-15279 severity important: SUSE including 18 source package names (2.2.1-5.25:libcurl4-8.14.1-slfo.1.1_2.1, 2.2.1-5.37:curl-8.14.1-slfo.1.1_2.1, …), 77 product×package rows across 39 product lines (Container suse/sl-micro/6.0/baremetal-os-container, Container suse/sl-micro/6.0/base-os-container, … (39 product lines)): Fixed 74, First Fixed 3. | https://www.suse.com/security/cve/CVE-2025-15279/ |
ubuntu
|
medium | CVE-2025-15279 medium priority: Ubuntu including 1 source packages (fontforge), 9 status rows across 9 suites (bionic, focal, jammy, noble, plucky, questing, resolute, upstream, xenial): needs-triage 7, ignored 1, released 1. | https://ubuntu.com/security/CVE-2025-15279 |
| URL | Tags |
|---|---|
| https://www.zerodayinitiative.com/advisories/ZDI-25-1184/ | Third Party Advisory |