EUVD-2025-200024
Heap-based Buffer Overflow (CWE-122)
2025-12-01
security@nortonlifelock.com
7.8
CVSS 3.1 · Vendor: nortonlifelock
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Severity by source
Vendor (nortonlifelock)
PRIMARY
7.8
HIGH
AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Primary rating from Vendor (nortonlifelock) · only source for this CVE.
CVSS VectorVendor: nortonlifelock
Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Lifecycle Timeline
8
CVSS changed
Jun 12, 2026 - 23:22 NVD
8.1 (HIGH)
7.8 (HIGH)
Analysis Updated
Apr 16, 2026 - 06:25 EUVD-patch-fix
executive_summary
Re-analysis Queued
Apr 16, 2026 - 05:29 backfill_euvd_patch
patch_released
Patch available
Apr 16, 2026 - 05:29 EUVD
3.9.2025
EUVD ID Assigned
Mar 15, 2026 - 13:34 euvd
EUVD-2025-200024
Analysis Generated
Mar 15, 2026 - 13:34 vuln.today
CVE Published
Dec 01, 2025 - 16:15 cve.org
HIGH 7.8
CVE Published
Dec 01, 2025 - 16:15 nvd
HIGH 8.1
DescriptionCVE.org
Heap-based Buffer Overflow, Out-of-bounds Write vulnerability in Avast Antivirus on MacOS of a crafted Mach-O file may allow Local Execution of Code or Denial of Service of antivirus protection. This issue affects Antivirus: from 15.7 before 3.9.2025.
AnalysisAI
A heap-based buffer overflow in Avast Antivirus for macOS when processing crafted Mach-O files allows a local attacker to execute arbitrary code or disable antivirus protection. The vulnerability requires user interaction to open a malicious file. No public exploit code has been identified, and EPSS indicates low exploitation probability.
Same weakness CWE-122 – Heap-based Buffer Overflow
View allSame technique Buffer Overflow
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External POC / Exploit Code
Leaving vuln.today
Destination URL
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