Vulnerability Instance
Lookup for vulnerabilities affecting packages.
GET /api/vulnerabilities/77703?format=api
{ "url": "http://public2.vulnerablecode.io/api/vulnerabilities/77703?format=api", "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=api", "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=api", "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=api", "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=api", "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=api", "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=api", "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=api", "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=api", "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": "0.13329", "published_at": "2026-06-06T12:55:00Z" }, { "value": "0.00042", "scoring_system": "epss", "scoring_elements": "0.13325", "published_at": "2026-06-05T12:55:00Z" } ], "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": "", "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/security/advisories/GHSA-jcc5-8wj4-7c58" } ], "weaknesses": [ { "cwe_id": 787, "name": "Out-of-bounds Write", "description": "The product writes data past the end, or before the beginning, of the intended buffer." } ], "exploits": [], "severity_range_score": "8.1 - 8.8", "exploitability": "0.5", "weighted_severity": "7.9", "risk_score": 4.0, "resource_url": "http://public2.vulnerablecode.io/vulnerabilities/VCID-29gt-w9qk-a3ac" }