CVE-2023-26768Public exploitNetwork attack vector

Process crash via unchecked logging filename copy

Published Mar 16, 2023 · Updated Feb 26, 2025

Buffer overflow in Liblouis 3.24.0 allows remote attackers to crash a consuming process by supplying an overlong logging filename. The lou_logFile function passes a caller-supplied filename to strcpy, copying more than 255 bytes into the fixed-size initialLogFileName global buffer. Reachability depends on a consuming application passing attacker-controlled input to this library API; the demonstrated consequence is process termination under AddressSanitizer.

CVSS severity7.5
High
EPSS probability1.36%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Buffer overflow in Liblouis 3.24.0 allows remote attackers to crash a consuming process by supplying an overlong logging filename. The lou_logFile function passes a caller-supplied filename to strcpy, copying more than 255 bytes into the fixed-size initialLogFileName global buffer. Reachability depends on a consuming application passing attacker-controlled input to this library API; the demonstrated consequence is process termination under AddressSanitizer.

The record

CVE
CVE-2023-26768
Published
Mar 16, 2023
Updated
Feb 26, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-120, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 16, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 26, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
T1499.004Endpoint Denial of Service: Application or System Exploitation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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