{"id":"CVE-2026-5153","published":"2026-03-30T21:30:16Z","modified":"2026-03-31T15:29:21Z","title":"Tenda CH22 WriteFacMac FormWriteFacMac command injection","vendor":"Tenda","product":"CH22","tier":"core","eol":null,"affectedVersions":[{"vendor":"Tenda","product":"CH22","versions":["1.0.0.1"]}],"description":{"text":"A flaw has been found in Tenda CH22 1.0.0.1. The affected element is the function FormWriteFacMac of the file /goform/WriteFacMac. Executing a manipulation of the argument mac can lead to command injection. The attack may be launched remotely. The exploit has been published and may be used.","provenance":"source","from":"CVE.org"},"summary":null,"cvss":{"score":6.3,"severity":"MEDIUM","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R","provenance":"source","from":"CVE.org CNA"},"epss":{"score":0.03356,"percentile":0.88708,"date":"2026-10-31","provenance":"source"},"kev":null,"vulncheckKev":{"dateAdded":"2026-09-01","exploitedFirstSeen":"2026-09-01","ransomware":false,"evidence":[{"url":"https://dashboard.shadowserver.org/statistics/honeypot/vulnerability/map/?day=2026-09-01&host_type=src&vulnerability=cve-2026-5153","date":"2026-09-01"},{"url":"https://dashboard.shadowserver.org/statistics/honeypot/vulnerability/map/?day=2026-09-02&host_type=src&vulnerability=cve-2026-5153","date":"2026-09-02"},{"url":"https://previdian.com/CVE-2026-5153","date":"2026-09-02"},{"url":"https://dashboard.shadowserver.org/statistics/honeypot/vulnerability/map/?day=2026-09-03&host_type=src&vulnerability=cve-2026-5153","date":"2026-09-03"},{"url":"https://dashboard.shadowserver.org/statistics/honeypot/vulnerability/map/?day=2026-09-04&host_type=src&vulnerability=cve-2026-5153","date":"2026-09-04"},{"url":"https://dashboard.shadowserver.org/statistics/honeypot/vulnerability/map/?day=2026-09-05&host_type=src&vulnerability=cve-2026-5153","date":"2026-09-05"},{"url":"https://dashboard.shadowserver.org/statistics/honeypot/vulnerability/map/?day=2026-09-06&host_type=src&vulnerability=cve-2026-5153","date":"2026-09-06"},{"url":"https://dashboard.shadowserver.org/statistics/honeypot/vulnerability/map/?day=2026-09-07&host_type=src&vulnerability=cve-2026-5153","date":"2026-09-07"},{"url":"https://dashboard.shadowserver.org/statistics/honeypot/vulnerability/map/?day=2026-09-08&host_type=src&vulnerability=cve-2026-5153","date":"2026-09-08"},{"url":"https://dashboard.shadowserver.org/statistics/honeypot/vulnerability/map/?day=2026-09-09&host_type=src&vulnerability=cve-2026-5153","date":"2026-09-09"}],"evidenceTotal":19,"provenance":"source"},"exploited":true,"otx":null,"cwes":[{"id":"CWE-77","name":"Improper Neutralization of Special Elements used in a Command"},{"id":"CWE-74","name":"Improper Neutralization of Special Elements in Output Used by a Downstream Component"}],"references":[{"url":"https://vuldb.com/vuln/354185","tags":["vdb-entry","technical-description"]},{"url":"https://vuldb.com/vuln/354185/cti","tags":["signature","permissions-required"]},{"url":"https://vuldb.com/submit/780204","tags":["third-party-advisory"]},{"url":"https://github.com/Litengzheng/vuldb_new/blob/main/CH22/vul_60/README.md","tags":["exploit"]},{"url":"https://www.tenda.com.cn/","tags":["product"]}],"techniques":[],"reports":[],"affected":[],"advisories":[],"euvd":{"id":"EUVD-2026-17243","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-17243","exploited":false,"exploitedSince":null,"provenance":"source"},"exploits":[],"exploitSources":null,"exploitRefs":["https://github.com/Litengzheng/vuldb_new/blob/main/CH22/vul_60/README.md"],"flow":[],"timeline":[{"date":"2026-03-30","kind":"published","label":"Published (CVE.org)","url":"https://www.cve.org/CVERecord?id=CVE-2026-5153","provenance":"source"},{"date":"2026-09-01","kind":"exploited-reported","label":"Exploitation first reported (VulnCheck KEV evidence)","url":"https://dashboard.shadowserver.org/statistics/honeypot/vulnerability/map/?day=2026-09-01&host_type=src&vulnerability=cve-2026-5153","provenance":"source"}],"speed":{"daysToPublicExploit":null,"firstExploitFrom":null,"daysToKev":null},"priority":{"score":72.2,"factors":[{"name":"In a KEV catalog","points":35.0,"detail":"listed in VulnCheck KEV"},{"name":"Recent KEV listing","points":10.0,"detail":"added 61 days ago"},{"name":"Known ransomware use","points":0.0,"detail":"not known"},{"name":"EPSS percentile","points":17.74,"detail":"percentile 0.8871"},{"name":"Named in threat reports","points":0.0,"detail":"0 reports"},{"name":"Public exploit code","points":5.0,"detail":"1 NVD reference tagged Exploit"},{"name":"Mentioned in OTX pulses","points":0.0,"detail":"0 pulses"},{"name":"CVSS severity","points":4.41,"detail":"base score 6.3"},{"name":"End-of-life product","points":0.0,"detail":"supported or unknown"}]}}