CVE-2025-27363 (GCVE-0-2025-27363)

Vulnerability from cvelistv5 – Published: 2025-03-11 13:28 – Updated: 2026-04-19 22:08
VLAI CISA Previdian
Summary
An out of bounds write exists in FreeType versions 2.13.0 and below (newer versions of FreeType are not vulnerable) when attempting to parse font subglyph structures related to TrueType GX and variable font files. The vulnerable code assigns a signed short value to an unsigned long and then adds a static value causing it to wrap around and allocate too small of a heap buffer. The code then writes up to 6 signed long integers out of bounds relative to this buffer. This may result in arbitrary code execution. This vulnerability may have been exploited in the wild.
SSVC
Exploitation: active Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-05-07 03:55 UTC
CWE
  • Out-of-bounds Write (CWE-787)
  • CWE-787 - Out-of-bounds Write
Impacted products
Vendor Product Version
FreeType FreeType Affected: 0.0.0 , ≤ 2.13.0 (semver)
Create a notification for this product.
CISA
Known Exploited Vulnerability - GCVE BCP-07 Compliant

Vulnerability ID: CVE-2025-27363

Status: Confirmed

Status Updated: 2025-05-06 02:00 CEST

Exploited: Yes


Timestamps
First Seen: 2025-05-06
Asserted: 2025-05-06

Scope
Notes: FreeType Out-of-Bounds Write Vulnerability | Affected: FreeType / FreeType | Description: FreeType contains an out-of-bounds write vulnerability when attempting to parse font subglyph structures related to TrueType GX and variable font files that may allow for arbitrary code execution. | Required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. | Due date: 2025-05-27 | Known ransomware campaign use (KEV): Unknown | Notes (KEV): This vulnerability affects a common open-source component, third-party library, or a protocol used by different products. Please check with specific vendors for information on patching status. For more information, please see: https://source.android.com/docs/security/bulletin/2025-05-01 ; https://nvd.nist.gov/vuln/detail/CVE-2025-27363

Evidence

Type: Vendor Report

Signal: Successful Exploitation

Confidence: 80%

Source: cisa-kev


Details
Cwes CWE-787
Feed CISA Known Exploited Vulnerabilities Catalog
Product FreeType
Due Date 2025-05-27
Date Added 2025-05-06
Vendorproject FreeType
Vulnerabilityname FreeType Out-of-Bounds Write Vulnerability
Knownransomwarecampaignuse Unknown

References

Created: 2026-10-02 08:09 CEST | Updated: 2026-10-02 08:09 CEST
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant

Vulnerability ID: CVE-2025-27363

Status: Confirmed

Status Updated: 2025-05-06 09:17 CEST

Exploited: Yes


Timestamps
First Seen: 2025-05-06
Asserted: 2025-05-06

Scope
Notes: An out of bounds write exists in FreeType versions 2.13.0 and below (newer versions of FreeType are not vulnerable) when attempting to parse font... | Affected: FreeType / FreeType | CVSS: 8.1 (HIGH) | EPSS: 0.27775 | Used in malware: unknown | Listed 392 days ahead of CISA KEV | Not yet in CISA KEV: False

Evidence

Type: Public Report

Signal: Successful Exploitation

Confidence: 70%

Source: previdian


Details
Feed Previdian (previdian.com)
Title An out of bounds write exists in FreeType versions 2.13.0 and below (newer versions of FreeType are not vulnerable) when attempting to parse font...
Cve Id CVE-2025-27363
Vendor FreeType
Ghsa Id None
Product FreeType
Added Date 2025-05-06T07:17:25.771Z
Cvss Score 8.1
Epss Score 0.27775
Previous Ids
Cvss Severity HIGH
Virtual Patch False
Cvss Estimated False
Epss Percentile 0.98037
Used In Malware unknown
Vulnerability Id CVE-2025-27363
Ahead Of Cisa Kev
{
  "count": 392,
  "unit": "day"
}
Not Yet In Cisa Kev False

References

Created: 2026-10-02 09:10 CEST | Updated: 2026-10-02 09:10 CEST
Show details on NVD website

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                    "role": "CISA Coordinator",
                    "timestamp": "2025-05-07T03:55:53.843762Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              },
              {
                "other": {
                  "content": {
                    "dateAdded": "2025-05-06",
                    "reference": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-27363"
                  },
                  "type": "kev"
                }
              }
            ],
            "problemTypes": [
              {
                "descriptions": [
                  {
                    "cweId": "CWE-787",
                    "description": "CWE-787 Out-of-bounds Write",
                    "lang": "en",
                    "type": "CWE"
                  }
                ]
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2025-03-11T13:42:02.320Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "references": [
              {
                "tags": [
                  "vendor-advisory"
                ],
                "url": "https://source.android.com/docs/security/bulletin/2025-05-01"
              },
              {
                "tags": [
                  "government-resource"
                ],
                "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-27363"
              }
            ],
            "timeline": [
              {
                "lang": "en",
                "time": "2025-05-06T00:00:00.000Z",
                "value": "CVE-2025-27363 added to CISA KEV"
              }
            ],
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "defaultStatus": "unaffected",
              "product": "FreeType",
              "vendor": "FreeType",
              "versions": [
                {
                  "lessThanOrEqual": "2.13.0",
                  "status": "affected",
                  "version": "0.0.0",
                  "versionType": "semver"
                }
              ]
            }
          ],
          "dateAssigned": "2025-02-21T00:00:00.000Z",
          "descriptions": [
            {
              "lang": "en",
              "value": "An out of bounds write exists in FreeType versions 2.13.0 and below (newer versions of FreeType are not vulnerable) when attempting to parse font subglyph structures related to TrueType GX and variable font files. The vulnerable code assigns a signed short value to an unsigned long and then adds a static value causing it to wrap around and allocate too small of a heap buffer. The code then writes up to 6 signed long integers out of bounds relative to this buffer. This may result in arbitrary code execution. This vulnerability may have been exploited in the wild."
            }
          ],
          "metrics": [
            {
              "cvssV3_1": {
                "baseScore": 8.1,
                "baseSeverity": "HIGH",
                "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C/CR:H/IR:H/AR:H/MAV:N/MAC:L/MPR:N/MUI:N/MS:U/MC:H/MI:H/MA:H",
                "version": "3.1"
              },
              "format": "CVSS",
              "scenarios": [
                {
                  "lang": "en",
                  "value": "GENERAL"
                }
              ]
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "description": "Out-of-bounds Write (CWE-787)",
                  "lang": "en"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2025-03-13T12:54:55.748Z",
            "orgId": "4fc57720-52fe-4431-a0fb-3d2c8747b827",
            "shortName": "facebook"
          },
          "references": [
            {
              "tags": [
                "x_refsource_CONFIRM"
              ],
              "url": "https://www.facebook.com/security/advisories/cve-2025-27363"
            }
          ]
        }
      },
      "cveMetadata": {
        "assignerOrgId": "4fc57720-52fe-4431-a0fb-3d2c8747b827",
        "assignerShortName": "facebook",
        "cveId": "CVE-2025-27363",
        "datePublished": "2025-03-11T13:28:31.705Z",
        "dateReserved": "2025-02-21T19:53:14.160Z",
        "dateUpdated": "2026-04-19T22:08:52.695Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

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.

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Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.


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