RHSA-2026:2566

Vulnerability from csaf_redhat - Published: 2026-02-11 17:28 - Updated: 2026-03-18 03:17
Summary
Red Hat Security Advisory: fontforge security update
Severity
Important
Notes
Topic: An update for fontforge is now available for Red Hat Enterprise Linux 9.4 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
Details: FontForge is a font editor for outline and bitmap fonts. It supports a range of font formats, including PostScript (ASCII and binary Type 1, some Type 3 and Type 0), TrueType, OpenType (Type2) and CID-keyed fonts. Security Fix(es): * fontforge: command injection via crafted archives or compressed files (CVE-2024-25082) * fontforge: command injection via crafted filenames (CVE-2024-25081) * fontforge: FontForge: Remote Code Execution via heap-based buffer overflow in BMP file parsing (CVE-2025-15279) * fontforge: FontForge: Remote Code Execution via Use-After-Free in SFD file parsing (CVE-2025-15269) * fontforge: FontForge: Arbitrary code execution via SFD file parsing buffer overflow (CVE-2025-15275) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
CVE-2024-25081

Splinefont in FontForge through 20230101 allows command injection via crafted filenames.

4.2 (Medium)
CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:L
CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Vendor Fix For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 https://access.redhat.com/errata/RHSA-2026:2566
CVE-2024-25082

Splinefont in FontForge through 20230101 allows command injection via crafted archives or compressed files.

4.2 (Medium)
CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:L
CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Vendor Fix For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 https://access.redhat.com/errata/RHSA-2026:2566
CVE-2025-15269

A flaw was found in FontForge. This use-after-free vulnerability, occurring during the parsing of SFD (Spline Font Database) files, allows a remote attacker to execute arbitrary code. Successful exploitation requires user interaction, such as opening a specially crafted malicious file or visiting a malicious web page. This can lead to complete control over the affected system.

8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE-416 - Use After Free
Vendor Fix For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 https://access.redhat.com/errata/RHSA-2026:2566
Workaround To mitigate this issue, users should avoid opening untrusted SFD files or visiting malicious web pages. Exercise caution with content from unknown or suspicious sources to prevent exploitation of this vulnerability.
CVE-2025-15275

A flaw was found in FontForge. A remote attacker could exploit a heap-based buffer overflow vulnerability during SFD file parsing. This issue arises from insufficient validation of user-supplied data length before copying it to a buffer. Successful exploitation requires user interaction, such as opening a malicious SFD file, and could lead to arbitrary code execution in the context of the current user.

8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE-122 - Heap-based Buffer Overflow
Vendor Fix For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 https://access.redhat.com/errata/RHSA-2026:2566
Workaround Users should exercise caution and avoid opening untrusted SFD (Spline Font Database) files with FontForge. If FontForge is not essential for system operation, consider removing the `fontforge` package to eliminate the attack vector. This can be achieved using the system's package manager, for example, `sudo dnf remove fontforge` on Red Hat Enterprise Linux and Fedora systems. Removing this package may impact functionality that relies on font editing capabilities.
CVE-2025-15279

A flaw was found in FontForge. This heap-based buffer overflow vulnerability occurs during the parsing of pixels within BMP (Bitmap) files, due to insufficient validation of user-supplied data length. A remote attacker could exploit this by tricking a user into opening a malicious BMP file or visiting a malicious page. Successful exploitation could lead to arbitrary code execution in the context of the current user.

7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE-122 - Heap-based Buffer Overflow
Vendor Fix For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 https://access.redhat.com/errata/RHSA-2026:2566
Workaround Users are advised to avoid opening untrusted or suspicious BMP files with FontForge to prevent exploitation. If FontForge is not a required application, consider removing the `fontforge` package to eliminate the attack surface. Removing this package may impact functionality that relies on FontForge.
References
https://access.redhat.com/errata/RHSA-2026:2566 self
https://access.redhat.com/security/updates/classi… external
https://bugzilla.redhat.com/show_bug.cgi?id=2266180 external
https://bugzilla.redhat.com/show_bug.cgi?id=2266181 external
https://bugzilla.redhat.com/show_bug.cgi?id=2426421 external
https://bugzilla.redhat.com/show_bug.cgi?id=2426423 external
https://bugzilla.redhat.com/show_bug.cgi?id=2426429 external
https://security.access.redhat.com/data/csaf/v2/a… self
https://access.redhat.com/security/cve/CVE-2024-25081 self
https://bugzilla.redhat.com/show_bug.cgi?id=2266181 external
https://www.cve.org/CVERecord?id=CVE-2024-25081 external
https://nvd.nist.gov/vuln/detail/CVE-2024-25081 external
https://github.com/fontforge/fontforge/pull/5367 external
https://access.redhat.com/security/cve/CVE-2024-25082 self
https://bugzilla.redhat.com/show_bug.cgi?id=2266180 external
https://www.cve.org/CVERecord?id=CVE-2024-25082 external
https://nvd.nist.gov/vuln/detail/CVE-2024-25082 external
https://access.redhat.com/security/cve/CVE-2025-15269 self
https://bugzilla.redhat.com/show_bug.cgi?id=2426423 external
https://www.cve.org/CVERecord?id=CVE-2025-15269 external
https://nvd.nist.gov/vuln/detail/CVE-2025-15269 external
https://www.zerodayinitiative.com/advisories/ZDI-… external
https://access.redhat.com/security/cve/CVE-2025-15275 self
https://bugzilla.redhat.com/show_bug.cgi?id=2426429 external
https://www.cve.org/CVERecord?id=CVE-2025-15275 external
https://nvd.nist.gov/vuln/detail/CVE-2025-15275 external
https://www.zerodayinitiative.com/advisories/ZDI-… external
https://access.redhat.com/security/cve/CVE-2025-15279 self
https://bugzilla.redhat.com/show_bug.cgi?id=2426421 external
https://www.cve.org/CVERecord?id=CVE-2025-15279 external
https://nvd.nist.gov/vuln/detail/CVE-2025-15279 external
https://www.zerodayinitiative.com/advisories/ZDI-… external
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        }
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      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
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      ],
      "title": "fontforge: command injection via crafted archives or compressed files"
    },
    {
      "cve": "CVE-2025-15269",
      "cwe": {
        "id": "CWE-416",
        "name": "Use After Free"
      },
      "discovery_date": "2025-12-31T08:00:52.814389+00:00",
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        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2426423"
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          "title": "Vulnerability description"
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        {
          "category": "summary",
          "text": "fontforge: FontForge: Remote Code Execution via Use-After-Free in SFD file parsing",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This vulnerability is rated Important for Red Hat because it allows remote code execution in FontForge through a use-after-free flaw when parsing specially crafted SFD files. Successful exploitation requires user interaction, such as opening a malicious file or visiting a malicious web page. This affects FontForge as shipped in Red Hat Enterprise Linux versions 6, 7, 8, 9, and 10, as well as Fedora and Red Hat In-Vehicle OS.",
          "title": "Statement"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
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      "title": "fontforge: FontForge: Remote Code Execution via Use-After-Free in SFD file parsing"
    },
    {
      "cve": "CVE-2025-15275",
      "cwe": {
        "id": "CWE-122",
        "name": "Heap-based Buffer Overflow"
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      "discovery_date": "2025-12-31T08:01:21.294670+00:00",
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          "text": "A flaw was found in FontForge. A remote attacker could exploit a heap-based buffer overflow vulnerability during SFD file parsing. This issue arises from insufficient validation of user-supplied data length before copying it to a buffer. Successful exploitation requires user interaction, such as opening a malicious SFD file, and could lead to arbitrary code execution in the context of the current user.",
          "title": "Vulnerability description"
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          "text": "fontforge: FontForge: Arbitrary code execution via SFD file parsing buffer overflow",
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        },
        {
          "category": "other",
          "text": "This vulnerability is rated Important for Red Hat products. It allows for arbitrary code execution in FontForge when a user opens a specially crafted SFD file. This affects FontForge on Fedora 42, 43, Red Hat Enterprise Linux 6 ELS, 7 ELS, 8, 9, 10, and Red Hat In-Vehicle OS 2.0.",
          "title": "Statement"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
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            "CRB-9.4.0.Z.EUS:fontforge-debugsource-0:20201107-6.el9_4.aarch64",
            "CRB-9.4.0.Z.EUS:fontforge-debugsource-0:20201107-6.el9_4.i686",
            "CRB-9.4.0.Z.EUS:fontforge-debugsource-0:20201107-6.el9_4.ppc64le",
            "CRB-9.4.0.Z.EUS:fontforge-debugsource-0:20201107-6.el9_4.s390x",
            "CRB-9.4.0.Z.EUS:fontforge-debugsource-0:20201107-6.el9_4.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "fontforge: FontForge: Arbitrary code execution via SFD file parsing buffer overflow"
    },
    {
      "cve": "CVE-2025-15279",
      "cwe": {
        "id": "CWE-122",
        "name": "Heap-based Buffer Overflow"
      },
      "discovery_date": "2025-12-31T08:00:45.064346+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2426421"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in FontForge. This heap-based buffer overflow vulnerability occurs during the parsing of pixels within BMP (Bitmap) files, due to insufficient validation of user-supplied data length. A remote attacker could exploit this by tricking a user into opening a malicious BMP file or visiting a malicious page. Successful exploitation could lead to arbitrary code execution in the context of the current user.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "fontforge: FontForge: Remote Code Execution via heap-based buffer overflow in BMP file parsing",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This vulnerability is rated Important for Red Hat as it allows remote code execution via a heap-based buffer overflow in FontForge when parsing malicious BMP files. Exploitation requires user interaction, where a target must open a malicious BMP file or visit a malicious page. FontForge is available in Red Hat Enterprise Linux and Fedora distributions.",
          "title": "Statement"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
        "fixed": [
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          "CRB-9.4.0.Z.EUS:fontforge-0:20201107-6.el9_4.i686",
          "CRB-9.4.0.Z.EUS:fontforge-0:20201107-6.el9_4.ppc64le",
          "CRB-9.4.0.Z.EUS:fontforge-0:20201107-6.el9_4.s390x",
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          "CRB-9.4.0.Z.EUS:fontforge-0:20201107-6.el9_4.x86_64",
          "CRB-9.4.0.Z.EUS:fontforge-debuginfo-0:20201107-6.el9_4.aarch64",
          "CRB-9.4.0.Z.EUS:fontforge-debuginfo-0:20201107-6.el9_4.i686",
          "CRB-9.4.0.Z.EUS:fontforge-debuginfo-0:20201107-6.el9_4.ppc64le",
          "CRB-9.4.0.Z.EUS:fontforge-debuginfo-0:20201107-6.el9_4.s390x",
          "CRB-9.4.0.Z.EUS:fontforge-debuginfo-0:20201107-6.el9_4.x86_64",
          "CRB-9.4.0.Z.EUS:fontforge-debugsource-0:20201107-6.el9_4.aarch64",
          "CRB-9.4.0.Z.EUS:fontforge-debugsource-0:20201107-6.el9_4.i686",
          "CRB-9.4.0.Z.EUS:fontforge-debugsource-0:20201107-6.el9_4.ppc64le",
          "CRB-9.4.0.Z.EUS:fontforge-debugsource-0:20201107-6.el9_4.s390x",
          "CRB-9.4.0.Z.EUS:fontforge-debugsource-0:20201107-6.el9_4.x86_64"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2025-15279"
        },
        {
          "category": "external",
          "summary": "RHBZ#2426421",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2426421"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2025-15279",
          "url": "https://www.cve.org/CVERecord?id=CVE-2025-15279"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2025-15279",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-15279"
        },
        {
          "category": "external",
          "summary": "https://www.zerodayinitiative.com/advisories/ZDI-25-1184/",
          "url": "https://www.zerodayinitiative.com/advisories/ZDI-25-1184/"
        }
      ],
      "release_date": "2025-12-31T06:59:37.307000+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-02-11T17:28:27+00:00",
          "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258",
          "product_ids": [
            "CRB-9.4.0.Z.EUS:fontforge-0:20201107-6.el9_4.aarch64",
            "CRB-9.4.0.Z.EUS:fontforge-0:20201107-6.el9_4.i686",
            "CRB-9.4.0.Z.EUS:fontforge-0:20201107-6.el9_4.ppc64le",
            "CRB-9.4.0.Z.EUS:fontforge-0:20201107-6.el9_4.s390x",
            "CRB-9.4.0.Z.EUS:fontforge-0:20201107-6.el9_4.src",
            "CRB-9.4.0.Z.EUS:fontforge-0:20201107-6.el9_4.x86_64",
            "CRB-9.4.0.Z.EUS:fontforge-debuginfo-0:20201107-6.el9_4.aarch64",
            "CRB-9.4.0.Z.EUS:fontforge-debuginfo-0:20201107-6.el9_4.i686",
            "CRB-9.4.0.Z.EUS:fontforge-debuginfo-0:20201107-6.el9_4.ppc64le",
            "CRB-9.4.0.Z.EUS:fontforge-debuginfo-0:20201107-6.el9_4.s390x",
            "CRB-9.4.0.Z.EUS:fontforge-debuginfo-0:20201107-6.el9_4.x86_64",
            "CRB-9.4.0.Z.EUS:fontforge-debugsource-0:20201107-6.el9_4.aarch64",
            "CRB-9.4.0.Z.EUS:fontforge-debugsource-0:20201107-6.el9_4.i686",
            "CRB-9.4.0.Z.EUS:fontforge-debugsource-0:20201107-6.el9_4.ppc64le",
            "CRB-9.4.0.Z.EUS:fontforge-debugsource-0:20201107-6.el9_4.s390x",
            "CRB-9.4.0.Z.EUS:fontforge-debugsource-0:20201107-6.el9_4.x86_64"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:2566"
        },
        {
          "category": "workaround",
          "details": "Users are advised to avoid opening untrusted or suspicious BMP files with FontForge to prevent exploitation. If FontForge is not a required application, consider removing the `fontforge` package to eliminate the attack surface. Removing this package may impact functionality that relies on FontForge.",
          "product_ids": [
            "CRB-9.4.0.Z.EUS:fontforge-0:20201107-6.el9_4.aarch64",
            "CRB-9.4.0.Z.EUS:fontforge-0:20201107-6.el9_4.i686",
            "CRB-9.4.0.Z.EUS:fontforge-0:20201107-6.el9_4.ppc64le",
            "CRB-9.4.0.Z.EUS:fontforge-0:20201107-6.el9_4.s390x",
            "CRB-9.4.0.Z.EUS:fontforge-0:20201107-6.el9_4.src",
            "CRB-9.4.0.Z.EUS:fontforge-0:20201107-6.el9_4.x86_64",
            "CRB-9.4.0.Z.EUS:fontforge-debuginfo-0:20201107-6.el9_4.aarch64",
            "CRB-9.4.0.Z.EUS:fontforge-debuginfo-0:20201107-6.el9_4.i686",
            "CRB-9.4.0.Z.EUS:fontforge-debuginfo-0:20201107-6.el9_4.ppc64le",
            "CRB-9.4.0.Z.EUS:fontforge-debuginfo-0:20201107-6.el9_4.s390x",
            "CRB-9.4.0.Z.EUS:fontforge-debuginfo-0:20201107-6.el9_4.x86_64",
            "CRB-9.4.0.Z.EUS:fontforge-debugsource-0:20201107-6.el9_4.aarch64",
            "CRB-9.4.0.Z.EUS:fontforge-debugsource-0:20201107-6.el9_4.i686",
            "CRB-9.4.0.Z.EUS:fontforge-debugsource-0:20201107-6.el9_4.ppc64le",
            "CRB-9.4.0.Z.EUS:fontforge-debugsource-0:20201107-6.el9_4.s390x",
            "CRB-9.4.0.Z.EUS:fontforge-debugsource-0:20201107-6.el9_4.x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "CRB-9.4.0.Z.EUS:fontforge-0:20201107-6.el9_4.aarch64",
            "CRB-9.4.0.Z.EUS:fontforge-0:20201107-6.el9_4.i686",
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            "CRB-9.4.0.Z.EUS:fontforge-debuginfo-0:20201107-6.el9_4.i686",
            "CRB-9.4.0.Z.EUS:fontforge-debuginfo-0:20201107-6.el9_4.ppc64le",
            "CRB-9.4.0.Z.EUS:fontforge-debuginfo-0:20201107-6.el9_4.s390x",
            "CRB-9.4.0.Z.EUS:fontforge-debuginfo-0:20201107-6.el9_4.x86_64",
            "CRB-9.4.0.Z.EUS:fontforge-debugsource-0:20201107-6.el9_4.aarch64",
            "CRB-9.4.0.Z.EUS:fontforge-debugsource-0:20201107-6.el9_4.i686",
            "CRB-9.4.0.Z.EUS:fontforge-debugsource-0:20201107-6.el9_4.ppc64le",
            "CRB-9.4.0.Z.EUS:fontforge-debugsource-0:20201107-6.el9_4.s390x",
            "CRB-9.4.0.Z.EUS:fontforge-debugsource-0:20201107-6.el9_4.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "fontforge: FontForge: Remote Code Execution via heap-based buffer overflow in BMP file parsing"
    }
  ]
}


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Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.