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fontforge — security advisory

Type: advisorySources: OSVAdvisory ID: UBUNTU-CVE-2025-15278

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.

Products
fontforge
Affected versions
1:20161005~dfsg-4+deb9u1ubuntu1, 1:20170731~dfsg-1, 1:20170731~dfsg-1build1, 1:20170731~dfsg-1ubuntu0.1~esm1, 1:20170731~dfsg-2, 1:20190801~dfsg-2, 1:20190801~dfsg-2ubuntu1, 1:20190801~dfsg-4, 1:20190801~dfsg-4ubuntu0.1, 1:20201107~dfsg-4, 1:20201107~dfsg-4+deb11u1build0.22.04.1, 1:20201107~dfsg-4build1, 1:20230101~dfsg-1.1, 1:20230101~dfsg-1.1build1, 1:20230101~dfsg-1build1, 1:20230101~dfsg-1build2, 1:20230101~dfsg-4build1, 1:20230101~dfsg-4build2, 1:20230101~dfsg-7, 1:20230101~dfsg-8, 1:20230101~dfsg-8build1, 1:20230101~dfsg-9, 1:20251009+git20260808~dfsg-2, 20120731.b-5, 20120731.b-5ubuntu1, 20120731.b-7.1, 20120731.b-7.1ubuntu0.1, 20120731.b-7.1ubuntu0.1+esm1
Fixed versions
Not specified
CVEs
CVE-2025-15278
Confirmed fixed CVEs
Not specified
Updated in this feed
31 Oct 2026, 01:25 UTC · Revision 1

Source evidence

UBUNTU-CVE-2025-15278

core-osv · Original source

Published 31 Dec 2025, 07:15 UTC

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.

osv:UBUNTU-CVE-2025-15278

fontforge

Fixed versions: Not specified

fontforge

Fixed versions: Not specified

fontforge

Fixed versions: Not specified

fontforge

Fixed versions: Not specified

fontforge

Fixed versions: Not specified

fontforge

Fixed versions: Not specified

fontforge

Fixed versions: Not specified

fontforge

Fixed versions: Not specified

Complete source record
{
  "id": "5a61a8365370b8d3f1d4146732e36beaa6b536495c3fd7457aa515a4729a2cd0",
  "url": "https://osv.dev/vulnerability/UBUNTU-CVE-2025-15278",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "UBUNTU-CVE-2025-15278",
    "summary": "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.",
    "evidence": "osv:UBUNTU-CVE-2025-15278",
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      "aliases": [
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      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"
        },
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                "binary_name": "fontforge-common",
                "binary_version": "20120731.b-7.1ubuntu0.1+esm1"
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              {
                "binary_name": "fontforge-nox",
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          },
          "versions": [
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          ],
          "database_specific": {
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          },
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          ],
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            "purl": "pkg:deb/ubuntu/fontforge?arch=source&distro=resolute",
            "ecosystem": "Ubuntu:26.04:LTS"
          },
          "versions": [
            "1:20230101~dfsg-8",
            "1:20230101~dfsg-8build1"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-15278.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "fontforge",
                "binary_version": "1:20230101~dfsg-8build1"
              },
              {
                "binary_name": "fontforge-common",
                "binary_version": "1:20230101~dfsg-8build1"
              },
              {
                "binary_name": "fontforge-extras",
                "binary_version": "1:20230101~dfsg-8build1"
              },
              {
                "binary_name": "fontforge-nox",
                "binary_version": "1:20230101~dfsg-8build1"
              },
              {
                "binary_name": "libfontforge4",
                "binary_version": "1:20230101~dfsg-8build1"
              },
              {
                "binary_name": "python3-fontforge",
                "binary_version": "1:20230101~dfsg-8build1"
              }
            ]
          }
        }
      ],
      "modified": "2026-10-17T12:56:48.187572202Z",
      "provider": "osv",
      "upstream": [
        "CVE-2025-15278"
      ],
      "references": [
        "https://ubuntu.com/security/CVE-2025-15278",
        "https://www.cve.org/CVERecord?id=CVE-2025-15278",
        "https://www.zerodayinitiative.com/advisories/ZDI-25-1185/"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2025-15278",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 356320,
  "published_at": "2025-12-31T07:15:00+00:00"
}