CVE-2026-4962General(uvnc / ultravnc)

LOWCVSS 6.4 · MEDIUM

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

A security flaw has been discovered in UltraVNC up to 1.6.4.0. Affected by this issue is some unknown functionality in the library version.dll of the component Service. The manipulation results in uncontrolled search path. The attack needs to be approached locally. This attack is characterized by high complexity. The exploitation is known to be difficult. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

0.0/ 10 priority

Sources & remediation

Exploit / PoC references
Vendor / third-party advisories
Weakness type (CWE)
CWE-426CWE-427

Priority

LOW

Exploitation

NONE

PoC

YES

Patch

NONE

Momentum

STABLE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • ultravnc

Threat summary

  • 3 mentions across 2 observed days
  • Momentum state: stable

What's happening

  • Technical details provided in 1 signal
  • General: 2 classified signals
  • Disclosure: 1 classified signal
  • Peaked 1d ago at 2 mentions (2026-03-28); latest day: 1
  • 3 total mentions across 2 days

Affected systems

Vendors
Products
ultravnc

Deep dive

Activity timeline3 mentions / 2d
01122Mentions · 2026-03-28: 2Mentions · 2026-05-04: 1Technical Details · 2026-03-28: 103-2805-04
Signal classification2 categories
General
266.7%
Disclosure
133.3%
Referenced assets2 URLs
Classification over time
DateTotalLabels
2026-03-282
Disclosure1General1
2026-05-041
General1
Full discourse3 posts
  • nico@love20202272
    General

    @ultravnc1 CVE-2026-3787- CVE-2026-4962

    Post summary

    The tweet merely lists two CVE identifiers without additional context or details.

    1000041
    139 followersView on X
  • White Rabbitx@TheRabbitPy
    Disclosure

    🚨 UltraVNC Search Path Hijack CVSS: 8.8 DLL hijacking via search path vuln in UltraVNC grants SYSTEM privileges. Local attackers drop malicious DLLs for persistence and escalation on Windows. https://nvd.nist.gov/vuln/detail/CVE-2026-4962

    Post summary

    The post announces a new UltraVNC privilege‑escalation vulnerability (DLL hijacking) with a CVSS 8.8 score, but does not provide a PoC, exploit code, or patch details.

    1000033
    434 followersView on X
  • CVE@CVEnew
    General

    CVE-2026-4962 A security flaw has been discovered in UltraVNC up to 1.6.4.0. Affected by this issue is some unknown functionality in the library version.dll of the component Service.… https://www.cve.org/CVERecord?id=CVE-2026-4962

    Post summary

    The post announces a CVE for UltraVNC but provides no concrete details on exploitation, patching, or technical specifics.

    0001090
    56.9K followersView on X
CPE platform detail1 entries

1 of 1 entries

PartVendorProductVersionTarget SWTarget HW
Appuvncultravnc---

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