high Known exploitedREV. 01

CVE-2024-49138Windows log file driver — heap overflow (CVE-2024-49138)

The Common Log File System driver in Windows overflows a heap buffer, letting a local attacker raise privileges. Exploit code is public, and this driver has produced a long run of the same bug.

YOUR NEXT MOVE

Install the Microsoft update for this CVE now; exploit code is public, so prioritise hosts that lag on cumulative updates.

Read the risk

THE VITAL STATS
CVSS score
7.8/ 10
CVSS v3.1
EPSS probability
26%
Likelihood of exploitation
Attack complexity
Low
Conditions needed to exploit
Known exploited
Yes — CISA KEV
CVE published
2024-12-12
Added to KEV
2024-12-10
Exploit published
Yes
Confidence
high
Kill chain
privilege escalation
MITRE ATT&CK
—
Severity
high

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

Attacker needsAn existing local account on the machine.

Behind the card

5 REFERENCES
Field-level provenanceTRACE THE SOURCES +

Which source supports each field, when it was retrieved, and who extracted it.

FieldsSourceRetrievedExtractorConfidence
cvss, exploitation.attack_complexity, exploitation.exploit_available, references, published_atnvd.nist.gov2026-09-24scrty-crds-pipeline/0.1high
exploitation.known_exploited, exploitation.kev_addedcisa.gov2026-09-24scrty-crds-pipeline/0.1high
epssapi.first.org2026-09-24scrty-crds-pipeline/0.1high
title, summary, severity, remediation, mitre_attack, kill_chain, recommended_action, confidence, tags, exploitation.prerequisitesnvd.nist.gov2026-09-24claude-codehigh

Printing history

THE RECORD
  1. r1Initial base card

First printing. This card has not been reprinted since publication.

crds:cve-2024-49138 · CRDS 0.1 · Issued 2026-09-24