CWE-134Base3 in KEV

Use of Externally-Controlled Format String

Draft in the CWE catalog · 142 CVEs mapped

142
CVEs mapped
3
In KEV
7.2
Median CVSS
What it is

The product uses a function that accepts a format string as an argument, but the format string originates from an external source.

Recent examples
8.8cvss
CVE-2026-73782

CVE-2026-73782 - HIGH Severity Vulnerability

A format string vulnerability exists in the command line interface of AOS-CX that could lead to unauthenticated remote code execution. Successful exploitation of this vulnerability results in the ability to execute arbitrary code as a privileged user on the underlying operating system.

HIGHno explanation yet
0%
epss
7.0cvss
CVE-2026-16821

CVE-2026-16821 - HIGH Severity Vulnerability

IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a local attacker to gain elevated privileges due to a format string vulnerability.

HIGHno explanation yet
0%
epss
8.2cvss
CVE-2026-81574

CVE-2026-81574 - HIGH Severity Vulnerability

In CodeMeter Runtime before versions 8.41a and 9.10, the logger does not sanitize input strings in certain cases, allowing an attacker to inject printf-style format specifiers. This can be used to reliably crash CodeMeter and disclose sensitive information such as process memory and stack canaries. The attack works locally, for example by using cmu --set-proxy to set the proxy value, and remotely when combined with CVE-2026-81573 by setting General.ProxyServer and then triggering this vulnerability.

HIGHno explanation yet
0%
epss
The record
Technical detail
CWE ID
CWE-134
Abstraction
Base
Structure
Simple
Status
Draft
References (6)