BlackTreeIndependent security intelligenceMicrosoft · Windows
CISA confirms exploitation in the wild and lists 2023-05-02 as the remediation due date.
CISA confirms exploitation in the wild and lists 2023-05-02 as the remediation due date.
Patch availableMicrosoft Windows Common Log File System (CLFS) driver contains an unspecified vulnerability that allows for privilege escalation.
Microsoft Windows Common Log File System (CLFS) driver contains an unspecified vulnerability that allows for privilege escalation.
A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().
An attacker operating through local access may attempt exploitation with low privileges. If successful, the issue may gain additional privileges.
Microsoft Windows Common Log File System (CLFS) driver contains an unspecified vulnerability that allows for privilege escalation.
A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().
An attacker operating through local access may attempt exploitation with low privileges. If successful, the issue may gain additional privileges.
CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.
CISA added this CVE to its Known Exploited Vulnerabilities catalogue on 2023-04-11. Known ransomware campaign use is recorded.
A structured CVE source labels at least one public reference as exploit material. BlackTree has not independently validated that it is safe, reliable or weaponised.
CWE-122: Heap-based Buffer Overflow. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:CCommon Vulnerability Scoring System 3.1: the compact vector below is decoded into plain language.
Operational remediation based on structured source evidence.
Published 11 Apr 2023 · Last source change 21 Oct 2025, 23:05 UTC · CWE-122 · Heap-based Buffer Overflow
Core structured fields are present and their contributing authorities are shown above.
No material field changes have been recorded since change tracking began. Routine source refreshes and cosmetic edits are intentionally excluded.