CVE-2026-90698

MEDIUM 5.3

memcached mcmc Tokenizer proto_text.c try_read_command_asciiauth out-of-bounds

CVSS Score

5.3

EPSS Score

0.0%

EPSS Percentile

0th

A security flaw has been discovered in memcached 1.6.41/1.6.42/1.6.43. This vulnerability affects the function try_read_command_asciiauth of the file proto_text.c of the component mcmc Tokenizer. The manipulation results in out-of-bounds read. It is possible to launch the attack remotely. The exploit has been released to the public and may be used for attacks. Upgrading to version 1.6.44 is able to resolve this issue. The patch is identified as af05c9302bba508b736c3da1d5670f63fe8b7db4. You should upgrade the affected component.

CWE	CWE-125 CWE-119
Vendor	n/a
Product	memcached
Published	Sep 14, 2026
Last Updated	Sep 15, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

n/a / memcached

1.6.41 1.6.42 1.6.43

References

NVD ↗ CVE.org ↗ EPSS Data ↗

vuldb.com: https://vuldb.com/vuln/403231 vuldb.com: https://vuldb.com/vuln/403231/cti vuldb.com: https://vuldb.com/cve/CVE-2026-90698 vuldb.com: https://vuldb.com/submit/916217 vuldb.com: https://vuldb.com/submit/916219 protectiv.ph: https://protectiv.ph/research/memcached-asciiauth-empty-line-dos github.com: https://github.com/memcached/memcached/commit/af05c9302bba508b736c3da1d5670f63fe8b7db4 github.com: https://github.com/memcached/memcached/releases/tag/1.6.44 github.com: https://github.com/memcached/memcached/

Credits

🔍 Ebfe7001d27b27064356271ddfb15d59 (VulDB User)