CVE WatchOct 14, 2026

CVE-2020-6096

An exploitable signed comparison vulnerability exists in the ARMv7 memcpy() implementation of GNU glibc 2.30.9000. Calling memcpy() (on ARMv

CVSS

8.1

High

EPSS

5.5%

p93

KEV

—

Exploit Today

0-100

Published: Apr 1, 2020 · Last modified: Oct 14, 2026 · CWE-195 · CWE-191 · CWE-681

EPSS · 30d

5.4%EPSS · 30 days5.5%

2026-10-062026-11-03

Technical description

An exploitable signed comparison vulnerability exists in the ARMv7 memcpy() implementation of GNU glibc 2.30.9000. Calling memcpy() (on ARMv7 targets that utilize the GNU glibc implementation) with a negative value for the 'num' parameter results in a signed comparison vulnerability. If an attacker underflows the 'num' parameter to memcpy(), this vulnerability could lead to undefined behavior such as writing to out-of-bounds memory and potentially remote code execution. Furthermore, this memcpy() implementation allows for program execution to continue in scenarios where a segmentation fault or crash should have occurred. The dangers occur in that subsequent execution and iterations of this code will be executed with this corrupted data.

Official references

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