memcached mcmc Tokenizer proto_text.c try_read_command_asciiauth out-of-bounds
33Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 6.9epss 0.5%
exploitation probability
0.5%top 58% of all CVEs
observed exploitation
nono source reports it
1 public exploit(s)
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.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
Affected products
n/a · memcachedpublic PoCs found — 1
cve_referenceprotectiv.ph/research/memcached-asciiauth-empty-line-dosunverified⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
References
https://github.com/memcached/memcached/https://github.com/memcached/memcached/commit/af05c9302bba508b736c3da1d5670f63fe8b7db4https://github.com/memcached/memcached/releases/tag/1.6.44https://protectiv.ph/research/memcached-asciiauth-empty-line-doshttps://vuldb.com/cve/CVE-2026-90698https://vuldb.com/submit/916217https://vuldb.com/submit/916219https://vuldb.com/vuln/403231https://vuldb.com/vuln/403231/cti