{"schemaVersion":3,"id":"MGASA-2026-0315","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"Updated libvncserver packages fix security vulnerabilities\n\nThe updated packages fix security vulnerabilities:\nHeap Out-of-Bounds Read in HandleUltraZipBPP due to unchecked\nsubrectangle count. (CVE-2026-32853)\nNULL pointer dereferences in httpd proxy handlers via malformed\nCONNECT/GET requests. (CVE-2026-32854)\nLibVNCClient Tight Gradient decoding allows malicious server-triggered\nheap/stack OOB writes. (CVE-2026-44988)\nAttacker-controlled heap out-of-bounds write in libvncclient Tight\ndecoder. (CVE-2026-50538)","dates":{"published":"2026-08-03T18:47:23.000Z","modified":"2026-08-03T19:00:05.507Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":null,"severity":"unknown","version":null,"versionLabel":null,"source":null,"vector":null,"computed":false,"selection":"none"},"metrics":[]},"epss":{"probability":null,"percentile":null,"severity":"unknown","asOf":null,"change":{"pp":null,"baselineDate":null,"baselineScore":null},"history":[],"last30":[]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[],"affected":[{"vendor":"mageia","product":"libvncserver","name":"libvncserver","label":"libvncserver","ecosystem":"Mageia","cpePart":null,"purl":"pkg:rpm/mageia/libvncserver","purlType":"rpm","versions":[{"text":"< 0.9.15-2.1.mga10","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 0.9.15-2.1.mga10","eol":null,"hubHref":null},{"vendor":"mageia","product":"libvncserver","name":"libvncserver","label":"libvncserver","ecosystem":"Mageia","cpePart":null,"purl":"pkg:rpm/mageia/libvncserver","purlType":"rpm","versions":[{"text":"< 0.9.14-1.1.mga9","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 0.9.14-1.1.mga9","eol":null,"hubHref":null}],"affectedCount":2,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://advisories.mageia.org/MGASA-2026-0315.html","label":"advisories.mageia.org/MGASA-2026-0315.html","hostname":"advisories.mageia.org","tags":["Advisory"]},{"url":"https://bugs.mageia.org/show_bug.cgi?id=35628","label":"bugs.mageia.org/show_bug.cgi?id=35628","hostname":"bugs.mageia.org","tags":["REPORT"]},{"url":"https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/message/SULCQANWMHMI72ZJZEJWSA2YD3ZSRUKQ/","label":"lists.opensuse.org/archives/…","hostname":"lists.opensuse.org","tags":["WEB"]},{"url":"https://github.com/LibVNC/libvncserver/security/advisories/GHSA-jcc5-8wj4-7c58","label":"github.com/LibVNC/libvncserver/security/advisories/GHSA-jcc5-8wj4-7c58","hostname":"github.com","tags":["Advisory"]},{"url":"https://ubuntu.com/security/notices/USN-8463-1","label":"ubuntu.com/security/notices/USN-8463-1","hostname":"ubuntu.com","tags":["Advisory"]},{"url":"https://github.com/LibVNC/libvncserver/security/advisories/GHSA-87q7-v983-qwcj","label":"github.com/LibVNC/libvncserver/security/advisories/GHSA-87q7-v983-qwcj","hostname":"github.com","tags":["Advisory"]},{"url":"https://github.com/LibVNC/libvncserver/security/advisories/GHSA-xjp8-4qqv-5x4x","label":"github.com/LibVNC/libvncserver/security/advisories/GHSA-xjp8-4qqv-5x4x","hostname":"github.com","tags":["Advisory"]},{"url":"https://ubuntu.com/security/notices/USN-8494-1","label":"ubuntu.com/security/notices/USN-8494-1","hostname":"ubuntu.com","tags":["Advisory"]},{"url":"https://github.com/LibVNC/libvncserver/security/advisories/GHSA-v9pm-47h4-jcq8","label":"github.com/LibVNC/libvncserver/security/advisories/GHSA-v9pm-47h4-jcq8","hostname":"github.com","tags":["Advisory"]}],"lineage":{"upstream":["CVE-2026-32853","CVE-2026-32854","CVE-2026-44988","CVE-2026-50538"],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2026-08-03T18:47:23.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-08-03T19:00:05.507Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":0,"level":"minimal","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-19T12:58:13.583Z","stale":false,"partial":false}}