Vulnerability-Lookup

GHSA-C5XP-JRPG-96G4

Vulnerability from github – Published: 2026-06-13 00:34 – Updated: 2026-06-13 00:34

Details

Heap buffer out-of-bounds write vulnerability in Avast Antivirus when scanning a malformed Windows PE file may allow Local Execution of Code or Denial-of-Service of the antivirus process.

This issue affects Avast Antivirus, AVG Antivirus, Norton Antivirus, Avast One, and Avast Business Antivirus on Windows, macOS, and Linux for virus definition builds before VPS 25040308.

The affected scanning logic is delivered through a shared Gen Digital virus definition update stream. The same stream feeds the consumer antivirus products listed in this advisory and other Gen Digital products that embed the same engine. Mitigation flows through this update channel; installations at or above the listed build are not vulnerable regardless of which product consumes the stream.

Severity

7.8 (High)


                  
                    CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2025-7004"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-787"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-06-12T22:16:48Z",
    "severity": "HIGH"
  },
  "details": "Heap buffer out-of-bounds write vulnerability in Avast Antivirus when scanning a malformed Windows PE file may allow Local Execution of Code or Denial-of-Service of the antivirus process.\n\nThis issue affects Avast Antivirus, AVG Antivirus, Norton Antivirus, Avast One, and Avast Business Antivirus on Windows, macOS, and Linux for virus definition builds before VPS 25040308.\n\n\n\nThe affected scanning logic is delivered through a shared Gen Digital virus definition update stream. The same stream feeds the consumer antivirus products listed in this advisory and other Gen Digital products that embed the same engine. Mitigation flows through this update channel; installations at or above the listed build are not vulnerable regardless of which product consumes the stream.",
  "id": "GHSA-c5xp-jrpg-96g4",
  "modified": "2026-06-13T00:34:30Z",
  "published": "2026-06-13T00:34:30Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-7004"
    },
    {
      "type": "WEB",
      "url": "https://www.gendigital.com/us/en/contact-us/security-advisories"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2025-7004 (GCVE-0-2025-7004)

Vulnerability from cvelistv5 – Published: 2026-06-12 22:04 – Updated: 2026-06-12 22:04

Title

Avast antivirus heap buffer OOB write when scanning a malformed PE file

Summary

Heap buffer out-of-bounds write vulnerability in Avast Antivirus when scanning a malformed Windows PE file may allow Local Execution of Code or Denial-of-Service of the antivirus process. This issue affects Avast Antivirus, AVG Antivirus, Norton Antivirus, Avast One, and Avast Business Antivirus on Windows, macOS, and Linux for virus definition builds before VPS 25040308. The affected scanning logic is delivered through a shared Gen Digital virus definition update stream. The same stream feeds the consumer antivirus products listed in this advisory and other Gen Digital products that embed the same engine. Mitigation flows through this update channel; installations at or above the listed build are not vulnerable regardless of which product consumes the stream.

Severity

7.8 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CWE

CWE-787 - Out-of-bounds Write

Assigner

GEN

References

1 reference

URL	Tags
https://www.gendigital.com/us/en/contact-us/secur…

Impacted products

5 products

Vendor	Product	Version
Gen Digital	Avast Antivirus	Affected: 0 , < 25040308 (custom)
Gen Digital	AVG Antivirus	Affected: 0 , < 25040308 (custom)
Gen Digital	Norton Antivirus	Affected: 0 , < 25040308 (custom)
Gen Digital	Avast One	Affected: 0 , < 25040308 (custom)
Gen Digital	Avast Business Antivirus	Affected: 0 , < 25040308 (custom)

Date Public

2025-05-26 11:01

Credits

Mike Zhang, an independent security researcher

Show details on NVD website

JSON

To clipboard

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  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "affected",
          "platforms": [
            "Windows",
            "macOS",
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          ],
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          "vendor": "Gen Digital",
          "versions": [
            {
              "lessThan": "25040308",
              "status": "affected",
              "version": "0",
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            }
          ]
        },
        {
          "defaultStatus": "affected",
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          ],
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          ],
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    "dateReserved": "2025-07-02T07:42:38.625Z",
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    "state": "PUBLISHED"
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  "dataType": "CVE_RECORD",
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}

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.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-C5XP-JRPG-96G4

CVE-2025-7004 (GCVE-0-2025-7004)

Tags

Sightings

Nomenclature