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© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2026-32854

30
FAUCET Score

CVE-2026-32854 identifies null pointer dereference vulnerabilities in LibVNCServer versions 0.9.15 and prior, affecting its HTTP proxy handlers. Remote attackers can exploit missing validation of strchr() return values in CONNECT and GET proxy paths to trigger a server crash, resulting in a denial of service. This vulnerability has a CVSS score of 7.5 HIGH, indicating it can be exploited remotely with low complexity and no privileges or user interaction. There is currently no evidence of active exploitation, public exploit code, or significant community discussion or media coverage for this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 0.9.15CPE matchmatch criteria
cpe:2.3:a:libvncserver_project:libvncserver:*:*:*:*:*:*:*:*
>= 0, <= 0.9.15CPE match
cpe:2.3:a:libvnc_project:libvncserver:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 4.0

6.3MEDIUM

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
PRESENT
Privileges Required
NONE
User Interaction
NONE
VS Confidentiality
NONE
VS Integrity
NONE
VS Availability
LOW
SS Confidentiality
NONE
SS Integrity
NONE
SS Availability
NONE
Exploit Maturity
NOT_DEFINED
CvssVersion
4.0

Exploit Intelligence

EPSS Score
5.32%
Probability of exploitation in next 30 days
EPSS Percentile
91.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0532 is in the 86th percentile among its peer group of 51,551 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

github.com / LibVNC/libvncserver/commit/dc78dee51a7e270e537a541a17befdf2073f5314
Patch
github.com / LibVNC/libvncserver/security/advisories/GHSA-xjp8-4qqv-5x4x
ExploitVendor Advisory
vulncheck.com / advisories/libvncserver-httpd-proxy-null-pointer-dereference
Third Party Advisory