Signal is active with 1 mentions in latest observed window
Recommended action window: Monitor and triage in normal cycle
NVD description
A weakness has been identified in UltraVNC 1.6.4.0 on Windows. This affects an unknown function in the library cryptbase.dll of the component Windows Service. This manipulation causes uncontrolled search path. The attack requires local access. A high degree of complexity is needed for the attack. The exploitability is reported as difficult. The vendor was contacted early about this disclosure but did not respond in any way.
Priority
LOW
Exploitation
NONE
PoC
NONE
Patch
NONE
Momentum
STABLE
If you run products in this scope, you should treat this CVE as relevant to your environment.
2 versions affected across 2 products
| Date | Total | Labels |
|---|
| 2026-03-08 | 1 | Disclosure1 |
| 2026-03-09 | 3 | Disclosure2General1 |
| 2026-03-12 | 1 | Disclosure1 |
| 2026-03-13 | 1 | Disclosure1 |
| 2026-03-17 | 1 | Disclose1 |
| 2026-04-23 | 1 | Disclosure1 |
| 2026-05-04 | 1 | General1 |
@ultravnc1 CVE-2026-3787 UltraVNC Windows Service cryptbase.dll uncontrolled search path
Post summary
The tweet announces a new vulnerability (CVE-2026-3787) in UltraVNC’s Windows Service that involves an uncontrolled search path within cryptbase.dll, without providing any PoC, exploit, patch, or evidence of active exploitation.
@ultravnc1 CVE-2026-3787- CVE-2026-4962
Post summary
The post simply lists two CVE identifiers without any additional context or detail.
@ultravnc1 Hi, there is unfotunately a security-problem with UltraVNC 1.6.4.0: https://www.cvedetails.com/cve/CVE-2026-3787/ is ther a Time-Plan, when ist will be fixed? Thank you in advanced. Kind regards.
Post summary
User reports a new CVE (CVE-2026-3787) for UltraVNC 1.6.4.0 and asks when a fix will be released.
CVE-2026-3787 UltraVNC 1.6.4.0 Local Privilege Escalation via Uncontrolled Search Path https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-3787
Post summary
The post reports the discovery of a local privilege escalation vulnerability (via uncontrolled search path) in UltraVNC version 1.6.4.0.
CVE-2026-3787 (CVSS:7.3, HIGH) is Analyzed. A weakness has been identified in UltraVNC 1.6.4.0 on Windows. This affects an unknown function in the library cryptbase..https://nvd.nist.gov/vuln/detail/CVE-2026-3787 #cybersecurityawareness #cybersecurity #CVE #infosec #hacker #nvd #mitre
Post summary
The tweet announces the CVE with severity and affected software but provides no evidence of PoC, exploitation, or remediation.
CVE-2026-3787 (CVSS:7.3, HIGH) is Analyzed. A weakness has been identified in UltraVNC 1.6.4.0 on Windows. This affects an unknown function in the library cryptbase..https://nvd.nist.gov/vuln/detail/CVE-2026-3787 #cybersecurityawareness #cybersecurity #CVE #infosec #hacker #nvd #mitre
Post summary
The post reports a new vulnerability in UltraVNC 1.6.4.0, providing CVSS details and linking to the NVD record, without mention of exploitation or mitigation.
CVE-2026-3787 A weakness has been identified in UltraVNC 1.6.4.0 on Windows. This affects an unknown function in the library cryptbase.dll of the component Windows Service. This mani… https://www.cve.org/CVERecord?id=CVE-2026-3787
Post summary
CVE-2026-3787 highlights a weakness in UltraVNC 1.6.4.0 related to an unknown function in cryptbase.dll, but no further technical specifics, exploits, or mitigation steps are disclosed.
CVE Alert: CVE-2026-3787 - n/a - UltraVNC - https://www.redpacketsecurity.com/cve-alert-cve-2026-3787-n-a-ultravnc/ #OSINT #ThreatIntel #CyberSecurity #cve-2026-3787 #n-a #ultravnc
Post summary
The tweet alerts the community to CVE‑2026‑3787 affecting UltraVNC, directing readers to an external site for more information.
🚨 CYBERDUDEBIVASH SENTINEL APEX ALERT 🚨 Threat: CVE-2026-3787 - UltraVNC Windows Service cryptbase.dll uncontrolled search path Intel Report: https://ift.tt/xktE6bP
Post summary
The tweet alerts to a newly disclosed CVE‑2026‑3787 affecting UltraVNC’s cryptbase.dll with an uncontrolled search path, but contains no proof‑of‑concept, exploit tools, or patch information.
2 of 2 entries
| Part | Vendor | Product | Version | Target SW | Target HW |
|---|---|---|---|---|---|
| OS | microsoft | windows | - | - | - |
| App | uvnc | ultravnc | 1.6.4.0 | - | - |