{"id":"CVE-2022-27924","published":"2022-04-21T00:15:08Z","modified":"2026-10-02T14:55:01Z","title":"Synacor Zimbra Collaboration Suite (ZCS) Command Injection Vulnerability","vendor":"Synacor","product":"Zimbra Collaboration Suite (ZCS)","tier":"core","eol":null,"description":{"text":"Zimbra Collaboration (aka ZCS) 8.8.15 and 9.0 allows an unauthenticated attacker to inject arbitrary memcache commands into a targeted instance. These memcache commands becomes unescaped, causing an overwrite of arbitrary cached entries.","provenance":"source","from":"NVD"},"summary":{"text":"A flaw in the Zimbra Collaboration Suite (ZCS) 8.8.15 and 9.0 lets memcache commands be injected because input is not properly escaped before reaching the memcache layer. An unauthenticated remote attacker with network access, requiring no user interaction and no special configuration, can inject arbitrary memcache commands into a targeted instance, overwriting arbitrary cached entries.","provenance":"ai","model":"claude-haiku-5-5","generatedAt":"2026-10-29T08:31:19Z"},"cvss":{"score":7.5,"severity":"HIGH","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","provenance":"source","from":"NVD"},"epss":{"score":0.93908,"percentile":0.99844,"date":"2026-10-29","provenance":"source"},"kev":{"dateAdded":"2022-08-04","dueDate":"2022-08-25","ransomware":true,"requiredAction":"Apply updates per vendor instructions.","notes":"https://wiki.zimbra.com/wiki/Zimbra_Releases/9.0.0/P24.1#Security_Fixes;  https://nvd.nist.gov/vuln/detail/CVE-2022-27924","provenance":"source"},"vulncheckKev":{"dateAdded":"2022-08-04","exploitedFirstSeen":"2022-08-04","ransomware":true,"evidence":[{"url":"https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json","date":"2022-08-04"},{"url":"https://assets.sentinelone.com/wt-reports/watchtower_2022_eoy","date":"2023-01-18"},{"url":"https://cisa.gov/news-events/cybersecurity-advisories/aa22-228a","date":"2023-01-27"},{"url":"https://unit42.paloaltonetworks.com/network-security-trends-nov-jan/","date":"2023-05-02"},{"url":"https://cisa.gov/news-events/cybersecurity-advisories/aa23-215a","date":"2023-08-03"},{"url":"https://cisa.gov/news-events/cybersecurity-advisories/aa23-278a","date":"2023-10-05"},{"url":"https://media.defense.gov/2024/Oct/09/2003562611/-1/-1/0/CSA-UPDATE-ON-SVR-CYBER-OPS.PDF","date":"2024-10-10"},{"url":"https://www.imperva.com/blog/imperva-defends-against-exploits-used-by-apt29-hackers/","date":"2024-10-14"},{"url":"https://ti.qianxin.com/uploads/2025/02/21/5c66fbda0feb2714c53f54dcedcd2e43.pdf","date":"2025-02-21"},{"url":"https://www.enisa.europa.eu/sites/default/files/2025-10/ENISA%20Threat%20Landscape%202025.pdf","date":"2025-10-09"}],"evidenceTotal":10,"provenance":"source"},"exploited":true,"otx":{"pulseCount":50,"pulses":[{"name":"Actively_Exploited_Kev 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2026","url":"https://otx.alienvault.com/pulse/6ad62f63c24a405a3423cc13","created":"2026-10-19"},{"name":"Actively_Exploited_Kev | Oct 19, 2026","url":"https://otx.alienvault.com/pulse/6ad4dda174e5797d0bd238b7","created":"2026-10-18"},{"name":"Actively_Exploited_Kev | Oct 18, 2026","url":"https://otx.alienvault.com/pulse/6ad38c22e1848f8189d1c121","created":"2026-10-17"}],"provenance":"machine"},"cwes":[{"id":"CWE-74","name":"Improper Neutralization of Special Elements in Output Used by a Downstream Component"},{"id":"CWE-93","name":"Improper Neutralization of CRLF Sequences"}],"references":[{"url":"https://wiki.zimbra.com/wiki/Security_Center","tags":["Vendor Advisory"]},{"url":"https://wiki.zimbra.com/wiki/Zimbra_Releases/9.0.0/P24","tags":["Release Notes","Vendor Advisory"]},{"url":"https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories","tags":["Vendor Advisory"]},{"url":"https://wiki.zimbra.com/wiki/Security_Center","tags":["Vendor Advisory"]},{"url":"https://wiki.zimbra.com/wiki/Zimbra_Releases/9.0.0/P24","tags":["Release Notes","Vendor Advisory"]},{"url":"https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories","tags":["Vendor Advisory"]},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-27924","tags":["US Government Resource"]}],"techniques":[{"id":"T1190","name":"Exploit Public-Facing Application","tactics":["initial-access"],"provenance":"ai","basis":"ai-mapping","bases":["ai-mapping"],"basisDetail":"claude-haiku-5-5: unauthenticated remote attacker exploits public-facing application","mappingType":"exploitation_technique","evidence":[{"from":"description","quote":"allows an unauthenticated attacker to inject arbitrary memcache commands","start":46,"end":118}],"model":"claude-haiku-5-5","confidence":"medium","confidenceNote":"AI-mapped from the description (quote-validated, not expert-reviewed)"},{"id":"T1565.001","name":"Stored Data Manipulation","tactics":["impact"],"provenance":"ai","basis":"ai-mapping","bases":["ai-mapping"],"basisDetail":"claude-haiku-5-5: overwrites cached data, altering stored content","mappingType":"primary_impact","evidence":[{"from":"description","quote":"causing an overwrite of arbitrary cached entries","start":188,"end":236}],"model":"claude-haiku-5-5","confidence":"medium","confidenceNote":"AI-mapped from the description (quote-validated, not expert-reviewed)"}],"reports":[],"affected":[],"advisories":[],"euvd":{"id":"EUVD-2022-32412","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2022-32412","exploited":true,"exploitedSince":"2022-08-04","provenance":"source"},"exploits":[],"exploitSources":{"nuclei":[{"id":"CVE-2022-27924","name":"Zimbra Collaboration Suite - Memcached Command 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exploited","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2022-32412","provenance":"source"}],"speed":{"daysToPublicExploit":null,"firstExploitFrom":null,"daysToKev":105},"priority":{"score":78.2,"factors":[{"name":"In a KEV catalog","points":35.0,"detail":"listed in CISA KEV and VulnCheck KEV"},{"name":"Recent KEV listing","points":0.0,"detail":"added 1547 days ago"},{"name":"Known ransomware use","points":10.0,"detail":"CISA KEV and VulnCheck KEV: Known"},{"name":"EPSS percentile","points":19.97,"detail":"percentile 0.9984"},{"name":"Named in threat reports","points":0.0,"detail":"0 reports"},{"name":"Public exploit code","points":5.0,"detail":"1 nuclei template"},{"name":"Mentioned in OTX pulses","points":3.0,"detail":"50 pulses"},{"name":"CVSS severity","points":5.25,"detail":"base score 7.5"},{"name":"End-of-life product","points":0.0,"detail":"supported or unknown"}]}}