{"id":"CVE-2026-77103","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-77103","generatedAt":"2026-10-28T00:08:04.473Z","title":"CommServe contained an authentication bypass issue affecting access authorization and information disclosure.","description":"CommServe contained an authentication bypass issue affecting access authorization and information disclosure. Software customers upgrade to resolved maintenance release. Update CommServe.","published":"2026-09-08T13:17:26.000Z","lastModified":"2026-09-09T15:56:35.000Z","status":"Analyzed","sourceIdentifier":"050066fd-a2f9-4f32-ab5d-4c53f48bc333","cvss":{"version":"4.0","score":8.7,"severity":"HIGH","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M"},"cwe":["CWE-288"],"affected":["commvault/commvault"],"epss":{"score":0.00497,"percentile":0.42345,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.50%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://documentation.commvault.com/securityadvisories/CV_2026_08_5.html","tags":["Vendor Advisory"],"source":"050066fd-a2f9-4f32-ab5d-4c53f48bc333"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-77103","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}