{"url":"http://public2.vulnerablecode.io/api/vulnerabilities/77703?format=json","vulnerability_id":"VCID-29gt-w9qk-a3ac","summary":"LibVNCClient is a library for easy implementation of a VNC client. In 0.9.15 and earlier, LibVNCClient's Tight encoding decoder uses fixed-size 2048-pixel scratch buffers for the Gradient filter, but it does not reject Tight rectangles whose width is larger than 2048 pixels. A malicious VNC server can send a crafted FramebufferUpdate rectangle using Tight encoding with NoZlib | ExplicitFilter and the Gradient filter. When a LibVNCClient-based client connects, the client processes the server-controlled rectangle width and writes beyond fixed-size Gradient buffers. This vulnerability is fixed with commit 5b270544b85233668b98161323297d418a8f5fd1.","aliases":[{"alias":"CVE-2026-44988"}],"fixed_packages":[{"url":"http://public2.vulnerablecode.io/api/packages/104306?format=json","purl":"pkg:deb/debian/libvncserver@0.9.15%2Bdfsg-5?distro=trixie","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:deb/debian/libvncserver@0.9.15%252Bdfsg-5%3Fdistro=trixie"},{"url":"http://public2.vulnerablecode.io/api/packages/509719?format=json","purl":"pkg:deb/debian/libvncserver@0.9.15%2Bdfsg-5","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:deb/debian/libvncserver@0.9.15%252Bdfsg-5"}],"affected_packages":[{"url":"http://public2.vulnerablecode.io/api/packages/104305?format=json","purl":"pkg:deb/debian/libvncserver@0.9.13%2Bdfsg-2%2Bdeb11u1?distro=trixie","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-29gt-w9qk-a3ac"},{"vulnerability":"VCID-878j-2fje-33c9"},{"vulnerability":"VCID-znxq-kbyc-h7cd"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:deb/debian/libvncserver@0.9.13%252Bdfsg-2%252Bdeb11u1%3Fdistro=trixie"},{"url":"http://public2.vulnerablecode.io/api/packages/509716?format=json","purl":"pkg:deb/debian/libvncserver@0.9.13%2Bdfsg-2%2Bdeb11u1","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-29gt-w9qk-a3ac"},{"vulnerability":"VCID-878j-2fje-33c9"},{"vulnerability":"VCID-znxq-kbyc-h7cd"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:deb/debian/libvncserver@0.9.13%252Bdfsg-2%252Bdeb11u1"},{"url":"http://public2.vulnerablecode.io/api/packages/104303?format=json","purl":"pkg:deb/debian/libvncserver@0.9.14%2Bdfsg-1%2Bdeb12u1?distro=trixie","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-29gt-w9qk-a3ac"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:deb/debian/libvncserver@0.9.14%252Bdfsg-1%252Bdeb12u1%3Fdistro=trixie"},{"url":"http://public2.vulnerablecode.io/api/packages/509717?format=json","purl":"pkg:deb/debian/libvncserver@0.9.14%2Bdfsg-1%2Bdeb12u1","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-29gt-w9qk-a3ac"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:deb/debian/libvncserver@0.9.14%252Bdfsg-1%252Bdeb12u1"},{"url":"http://public2.vulnerablecode.io/api/packages/104307?format=json","purl":"pkg:deb/debian/libvncserver@0.9.15%2Bdfsg-1%2Bdeb13u1?distro=trixie","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-29gt-w9qk-a3ac"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:deb/debian/libvncserver@0.9.15%252Bdfsg-1%252Bdeb13u1%3Fdistro=trixie"},{"url":"http://public2.vulnerablecode.io/api/packages/509718?format=json","purl":"pkg:deb/debian/libvncserver@0.9.15%2Bdfsg-1%2Bdeb13u1","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-29gt-w9qk-a3ac"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:deb/debian/libvncserver@0.9.15%252Bdfsg-1%252Bdeb13u1"}],"references":[{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2026-44988","reference_id":"","reference_type":"","scores":[{"value":"0.00042","scoring_system":"epss","scoring_elements":"0.13325","published_at":"2026-06-05T12:55:00Z"},{"value":"0.00042","scoring_system":"epss","scoring_elements":"0.13287","published_at":"2026-06-07T12:55:00Z"},{"value":"0.00042","scoring_system":"epss","scoring_elements":"0.13329","published_at":"2026-06-06T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-44988"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-44988","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-44988"},{"reference_url":"https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml","reference_id":"","reference_type":"","scores":[{"value":"8.1","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"}],"url":"https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml"},{"reference_url":"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1138174","reference_id":"1138174","reference_type":"","scores":[],"url":"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1138174"},{"reference_url":"https://github.com/LibVNC/libvncserver/commit/5b270544b85233668b98161323297d418a8f5fd1","reference_id":"5b270544b85233668b98161323297d418a8f5fd1","reference_type":"","scores":[{"value":"8.8","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"},{"value":"Track","scoring_system":"ssvc","scoring_elements":"SSVCv2/E:N/A:N/T:T/P:M/B:A/M:M/D:T/2026-05-29T03:55:55Z/"}],"url":"https://github.com/LibVNC/libvncserver/commit/5b270544b85233668b98161323297d418a8f5fd1"},{"reference_url":"https://github.com/LibVNC/libvncserver/security/advisories/GHSA-jcc5-8wj4-7c58","reference_id":"GHSA-jcc5-8wj4-7c58","reference_type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