MEDIUM
UltraVNC Launcher 1.2.2.4 Denial of Service Buffer Overflow
Published Mar 22, 2026
6.9
MEDIUMCVSS 4.0
EPSS 0.26%
Description
UltraVNC Launcher 1.2.2.4 contains a buffer overflow vulnerability in the Path vncviewer.exe property field that allows local attackers to crash the application by supplying an excessively long string. Attackers can input a 300-byte payload of repeated characters through the Properties dialog to trigger a denial of service condition.
Affected products
-
- Version 1.2.2.4StatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Uvnc | UltraVNC Launcher | n/a |
|
No data.
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Weaknesses (1)
References (4)
- https://www.exploit-db.com/exploits/46703 exploit
- https://www.uvnc.com/ product
- https://www.uvnc.com/downloads/ultravnc/126-download-ultravnc-1224.html product
- https://www.vulncheck.com/advisories/ultravnc-launcher-denial-of-service-buffer-overflow third-party-advisory
| Link | Providers | Tags |
|---|---|---|
| https://www.exploit-db.com/exploits/46703 | exploit | |
| https://www.uvnc.com/ | product | |
| https://www.uvnc.com/downloads/ultravnc/126-download-ultravnc-1224.html | product | |
| https://www.vulncheck.com/advisories/ultravnc-launcher-denial-of-service-buffer-overflow | third-party-advisory |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner VulnCheck
Published Mar 22, 2026
Updated Oct 1, 2026
Reserved Mar 22, 2026
Link CVE-2019-25601
CISA Vulnrichment
Updated Mar 23, 2026