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Vulnerability Instance

Lookup for vulnerabilities affecting packages.

Vulnerability_idVCID-29gt-w9qk-a3ac
SummaryLibVNCClient 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
0
alias CVE-2026-44988
Fixed_packages
0
url pkg:deb/debian/libvncserver@0.9.15%2Bdfsg-5?distro=trixie
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
1
url pkg:deb/debian/libvncserver@0.9.15%2Bdfsg-5
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
0
url pkg:deb/debian/libvncserver@0.9.13%2Bdfsg-2%2Bdeb11u1?distro=trixie
purl pkg:deb/debian/libvncserver@0.9.13%2Bdfsg-2%2Bdeb11u1?distro=trixie
is_vulnerable true
affected_by_vulnerabilities
0
vulnerability VCID-29gt-w9qk-a3ac
1
vulnerability VCID-878j-2fje-33c9
2
vulnerability VCID-znxq-kbyc-h7cd
resource_url http://public2.vulnerablecode.io/packages/pkg:deb/debian/libvncserver@0.9.13%252Bdfsg-2%252Bdeb11u1%3Fdistro=trixie
1
url pkg:deb/debian/libvncserver@0.9.13%2Bdfsg-2%2Bdeb11u1
purl pkg:deb/debian/libvncserver@0.9.13%2Bdfsg-2%2Bdeb11u1
is_vulnerable true
affected_by_vulnerabilities
0
vulnerability VCID-29gt-w9qk-a3ac
1
vulnerability VCID-878j-2fje-33c9
2
vulnerability VCID-znxq-kbyc-h7cd
resource_url http://public2.vulnerablecode.io/packages/pkg:deb/debian/libvncserver@0.9.13%252Bdfsg-2%252Bdeb11u1
2
url pkg:deb/debian/libvncserver@0.9.14%2Bdfsg-1%2Bdeb12u1?distro=trixie
purl pkg:deb/debian/libvncserver@0.9.14%2Bdfsg-1%2Bdeb12u1?distro=trixie
is_vulnerable true
affected_by_vulnerabilities
0
vulnerability VCID-29gt-w9qk-a3ac
resource_url http://public2.vulnerablecode.io/packages/pkg:deb/debian/libvncserver@0.9.14%252Bdfsg-1%252Bdeb12u1%3Fdistro=trixie
3
url pkg:deb/debian/libvncserver@0.9.14%2Bdfsg-1%2Bdeb12u1
purl pkg:deb/debian/libvncserver@0.9.14%2Bdfsg-1%2Bdeb12u1
is_vulnerable true
affected_by_vulnerabilities
0
vulnerability VCID-29gt-w9qk-a3ac
resource_url http://public2.vulnerablecode.io/packages/pkg:deb/debian/libvncserver@0.9.14%252Bdfsg-1%252Bdeb12u1
4
url pkg:deb/debian/libvncserver@0.9.15%2Bdfsg-1%2Bdeb13u1?distro=trixie
purl pkg:deb/debian/libvncserver@0.9.15%2Bdfsg-1%2Bdeb13u1?distro=trixie
is_vulnerable true
affected_by_vulnerabilities
0
vulnerability VCID-29gt-w9qk-a3ac
resource_url http://public2.vulnerablecode.io/packages/pkg:deb/debian/libvncserver@0.9.15%252Bdfsg-1%252Bdeb13u1%3Fdistro=trixie
5
url pkg:deb/debian/libvncserver@0.9.15%2Bdfsg-1%2Bdeb13u1
purl pkg:deb/debian/libvncserver@0.9.15%2Bdfsg-1%2Bdeb13u1
is_vulnerable true
affected_by_vulnerabilities
0
vulnerability VCID-29gt-w9qk-a3ac
resource_url http://public2.vulnerablecode.io/packages/pkg:deb/debian/libvncserver@0.9.15%252Bdfsg-1%252Bdeb13u1
References
0
reference_url https://api.first.org/data/v1/epss?cve=CVE-2026-44988
reference_id
reference_type
scores
0
value 0.00042
scoring_system epss
scoring_elements 0.13325
published_at 2026-06-05T12:55:00Z
1
value 0.00042
scoring_system epss
scoring_elements 0.13287
published_at 2026-06-07T12:55:00Z
2
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
1
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
2
reference_url https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
reference_id
reference_type
scores
0
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
3
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
4
reference_url https://github.com/LibVNC/libvncserver/commit/5b270544b85233668b98161323297d418a8f5fd1
reference_id 5b270544b85233668b98161323297d418a8f5fd1
reference_type
scores
0
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
1
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
5
reference_url https://github.com/LibVNC/libvncserver/security/advisories/GHSA-jcc5-8wj4-7c58
reference_id GHSA-jcc5-8wj4-7c58
reference_type
scores
0
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
1
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
0
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_score8.1 - 8.8
Exploitability0.5
Weighted_severity7.9
Risk_score4.0
Resource_urlhttp://public2.vulnerablecode.io/vulnerabilities/VCID-29gt-w9qk-a3ac