{"id":"CVE-2026-77101","title":"CommServe contained a stack-based buffer overflow issue affecting service availability","summary":"CommServe contained a stack-based buffer overflow issue affecting service availability. Software customers upgrade to resolved maintenance release. Update CommServe.","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-121"],"vendor":"commvault","product":"commvault","affected":["commvault >= 11.36.0, < 11.36.123","commvault >= 11.40.0, < 11.40.72","commvault >= 11.44.0, < 11.44.20","commvault >= 11.46.0, < 11.46.20"],"patched":["commvault 11.46.20"],"published":"2026-09-08","updated":"2026-09-09","sourceUpdated":"2026-09-09T15:55:36.430","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-77101","references":[{"url":"https://documentation.commvault.com/securityadvisories/CV_2026_08_3.html","label":"050066fd-a2f9-4f32-ab5d-4c53f48bc333"}],"tags":["nvd","cve.org"],"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"partial","timestamp":"2026-09-08T13:24:30.911215Z"},"scores":{"nvd":7.5,"cna":8.7},"ingestedAt":"2026-09-08T15:33:26.984Z","epss":0.00267,"epssPercentile":0.19037,"slug":"CVE-2026-77101","body":"## Overview\n\nCommServe contained a stack-based buffer overflow issue affecting service availability. Software customers upgrade to resolved maintenance release. Update CommServe.\n\n## Affected\n\n- `commvault >= 11.36.0, < 11.36.123`\n- `commvault >= 11.40.0, < 11.40.72`\n- `commvault >= 11.44.0, < 11.44.20`\n- `commvault >= 11.46.0, < 11.46.20`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `commvault 11.46.20`","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[{"seq":201923,"id":"CVE-2026-77101","ts":1789399986898,"field":"cvss","old":"8.7","new":"7.5"},{"seq":200653,"id":"CVE-2026-77101","ts":1789397562693,"field":"cvss","old":"7.5","new":"8.7"},{"seq":199360,"id":"CVE-2026-77101","ts":1789395472358,"field":"cvss","old":"8.7","new":"7.5"},{"seq":198605,"id":"CVE-2026-77101","ts":1789392166732,"field":"cvss","old":"7.5","new":"8.7"},{"seq":198560,"id":"CVE-2026-77101","ts":1789392092769,"field":"cvss","old":"8.7","new":"7.5"},{"seq":196351,"id":"CVE-2026-77101","ts":1789383734887,"field":"cvss","old":"7.5","new":"8.7"},{"seq":195280,"id":"CVE-2026-77101","ts":1789380554444,"field":"cvss","old":"8.7","new":"7.5"},{"seq":194067,"id":"CVE-2026-77101","ts":1789378659104,"field":"cvss","old":"7.5","new":"8.7"},{"seq":192854,"id":"CVE-2026-77101","ts":1789376488322,"field":"cvss","old":"8.7","new":"7.5"},{"seq":191641,"id":"CVE-2026-77101","ts":1789373581398,"field":"cvss","old":"7.5","new":"8.7"},{"seq":190426,"id":"CVE-2026-77101","ts":1789369427995,"field":"cvss","old":"8.7","new":"7.5"},{"seq":189213,"id":"CVE-2026-77101","ts":1789368355347,"field":"cvss","old":"7.5","new":"8.7"},{"seq":187996,"id":"CVE-2026-77101","ts":1789365208312,"field":"cvss","old":"8.7","new":"7.5"},{"seq":186783,"id":"CVE-2026-77101","ts":1789363436775,"field":"cvss","old":"7.5","new":"8.7"},{"seq":185569,"id":"CVE-2026-77101","ts":1789361192448,"field":"cvss","old":"8.7","new":"7.5"},{"seq":184356,"id":"CVE-2026-77101","ts":1789358300147,"field":"cvss","old":"7.5","new":"8.7"},{"seq":182607,"id":"CVE-2026-77101","ts":1789354298309,"field":"cvss","old":"8.7","new":"7.5"},{"seq":181400,"id":"CVE-2026-77101","ts":1789353262604,"field":"cvss","old":"7.5","new":"8.7"},{"seq":180193,"id":"CVE-2026-77101","ts":1789350253124,"field":"cvss","old":"8.7","new":"7.5"},{"seq":178986,"id":"CVE-2026-77101","ts":1789348250007,"field":"cvss","old":"7.5","new":"8.7"},{"seq":177779,"id":"CVE-2026-77101","ts":1789346351472,"field":"cvss","old":"8.7","new":"7.5"},{"seq":176572,"id":"CVE-2026-77101","ts":1789343154148,"field":"cvss","old":"7.5","new":"8.7"},{"seq":174689,"id":"CVE-2026-77101","ts":1789334847792,"field":"cvss","old":"8.7","new":"7.5"},{"seq":173484,"id":"CVE-2026-77101","ts":1789333637176,"field":"cvss","old":"7.5","new":"8.7"},{"seq":172298,"id":"CVE-2026-77101","ts":1789331073857,"field":"cvss","old":"8.7","new":"7.5"},{"seq":171112,"id":"CVE-2026-77101","ts":1789328735683,"field":"cvss","old":"7.5","new":"8.7"},{"seq":169907,"id":"CVE-2026-77101","ts":1789327137654,"field":"cvss","old":"8.7","new":"7.5"},{"seq":168702,"id":"CVE-2026-77101","ts":1789323793785,"field":"cvss","old":"7.5","new":"8.7"},{"seq":167497,"id":"CVE-2026-77101","ts":1789319663898,"field":"cvss","old":"8.7","new":"7.5"},{"seq":166292,"id":"CVE-2026-77101","ts":1789318721192,"field":"cvss","old":"7.5","new":"8.7"},{"seq":165087,"id":"CVE-2026-77101","ts":1789315769489,"field":"cvss","old":"8.7","new":"7.5"},{"seq":163882,"id":"CVE-2026-77101","ts":1789313590196,"field":"cvss","old":"7.5","new":"8.7"},{"seq":162677,"id":"CVE-2026-77101","ts":1789311882230,"field":"cvss","old":"8.7","new":"7.5"},{"seq":161472,"id":"CVE-2026-77101","ts":1789308680111,"field":"cvss","old":"7.5","new":"8.7"},{"seq":159585,"id":"CVE-2026-77101","ts":1789300451914,"field":"cvss","old":"8.7","new":"7.5"},{"seq":156574,"id":"CVE-2026-77101","ts":1789294723455,"field":"cvss","old":"7.5","new":"8.7"},{"seq":155369,"id":"CVE-2026-77101","ts":1789292913769,"field":"cvss","old":"8.7","new":"7.5"},{"seq":154164,"id":"CVE-2026-77101","ts":1789289749493,"field":"cvss","old":"7.5","new":"8.7"},{"seq":152814,"id":"CVE-2026-77101","ts":1789281653177,"field":"cvss","old":"8.7","new":"7.5"},{"seq":152454,"id":"CVE-2026-77101","ts":1789281224508,"field":"cvss","old":"7.5","new":"8.7"},{"seq":151415,"id":"CVE-2026-77101","ts":1789277607489,"field":"cvss","old":"8.7","new":"7.5"},{"seq":150376,"id":"CVE-2026-77101","ts":1789276209944,"field":"cvss","old":"7.5","new":"8.7"},{"seq":149343,"id":"CVE-2026-77101","ts":1789273803780,"field":"cvss","old":"8.7","new":"7.5"},{"seq":148310,"id":"CVE-2026-77101","ts":1789271294418,"field":"cvss","old":"7.5","new":"8.7"},{"seq":146342,"id":"CVE-2026-77101","ts":1789269357688,"field":"cvss","old":"8.7","new":"7.5"},{"seq":145147,"id":"CVE-2026-77101","ts":1789266305291,"field":"cvss","old":"7.5","new":"8.7"},{"seq":144051,"id":"CVE-2026-77101","ts":1789262586163,"field":"cvss","old":"8.7","new":"7.5"},{"seq":142955,"id":"CVE-2026-77101","ts":1789261486075,"field":"cvss","old":"7.5","new":"8.7"},{"seq":141786,"id":"CVE-2026-77101","ts":1789258811197,"field":"cvss","old":"8.7","new":"7.5"},{"seq":140627,"id":"CVE-2026-77101","ts":1789256700661,"field":"cvss","old":"7.5","new":"8.7"}]}