{"id":"CVE-2026-90698","title":"A security flaw has been discovered in memcached 1.6.41/1.6.42/1.6.43","summary":"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…","severity":"medium","cvss":5.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","cwe":["CWE-119","CWE-125"],"vendor":"Red Hat","product":"memcached","affected":["memcached 1.6.41","memcached 1.6.42","memcached 1.6.43"],"published":"2026-09-14","updated":"2026-09-15","sourceUpdated":"2026-09-15T16:17:40.657","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-90698","references":[{"url":"https://github.com/memcached/memcached/","label":"cna@vuldb.com"},{"url":"https://github.com/memcached/memcached/commit/af05c9302bba508b736c3da1d5670f63fe8b7db4","label":"cna@vuldb.com"},{"url":"https://github.com/memcached/memcached/releases/tag/1.6.44","label":"cna@vuldb.com"},{"url":"https://protectiv.ph/research/memcached-asciiauth-empty-line-dos","label":"cna@vuldb.com"},{"url":"https://vuldb.com/cve/CVE-2026-90698","label":"cna@vuldb.com"},{"url":"https://vuldb.com/submit/916217","label":"cna@vuldb.com"},{"url":"https://vuldb.com/submit/916219","label":"cna@vuldb.com"},{"url":"https://vuldb.com/vuln/403231","label":"cna@vuldb.com"},{"url":"https://vuldb.com/vuln/403231/cti","label":"cna@vuldb.com"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-90698.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-90698"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2532955"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-90698"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-90698"},{"url":"https://access.redhat.com/errata/RHSA-2026:63224"}],"tags":["nvd","cve.org","exploit-available","csaf","vex","red-hat"],"exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"yes","technicalImpact":"partial","timestamp":"2026-09-15T15:55:23.607079Z"},"epss":0.00496,"epssPercentile":0.41645,"ingestedAt":"2026-09-14T15:23:07.464Z","patched":["hardened_images"],"slug":"CVE-2026-90698","body":"## Overview\n\nA 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · affected: Red Hat Hardened Images · no fix planned: Red Hat Hardened Images · updated 2026-09-14 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-90698.json)\n- **RHSA-2026:63224** · Red Hat · fixed in: Red Hat Hardened Images · released 2026-09-03 · [advisory](https://access.redhat.com/errata/RHSA-2026:63224)","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":29.2,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[{"seq":204257,"id":"CVE-2026-90698","ts":1789490437280,"field":"exploit_available","old":"false","new":"true"}]}