THREATPORT/VULNERABILITY/CVE-2026-32854
HIGH SEVERITY

CVE-2026-32854

Libvncserver vulnerability

CVSS
7.5
EPSS
5.3%
EPSS pct
92th
Exploited
No known
LibVNCServer versions 0.9.15 and prior (fixed in commit dc78dee) contain null pointer dereference vulnerabilities in the HTTP proxy handlers within httpProcessInput() in httpd.c that allow remote attackers to cause a denial of service by sending specially crafted HTTP requests. Attackers can exploit missing validation of strchr() return values in the CONNECT and GET proxy handling paths to trigger null pointer dereferences and crash the server when httpd and proxy features are enabled.
Affected vendor
Libvncserver Project
Affected product
Libvncserver
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness type (CWE)
  • CWE-476 — NULL Pointer Dereference
Published
2026-03-24

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no privileges, no user interaction. Successful exploitation leads to high impact to availability.

Its EPSS score of 5.3% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 92% of all scored CVEs.

Check your external exposure to CVE-2026-32854

  • Confirm whether Libvncserver Project Libvncserver is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2026-32854.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2026-32854

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2026-32854 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

Run a free external exposure scan

Are you exposed to CVE-2026-32854?

Run an instant, non-intrusive external scan to check your attack surface for CVE-2026-32854.

Start free scan

No credit card. Agentless.

Related vulnerabilities

HIGH
CVE-2019-13297
Imagemagick vulnerability
HIGH
CVE-2019-13300
Imagemagick vulnerability
HIGH
CVE-2019-13358
Opencats vulnerability