CVE-2019-8260 Integer overflow in UltraVNC

Critical 9.8 Published 5 Mar 2019 Updated 16 Sep 2024

An integer overflow in the VNC client RRE decoder allows out-of-bounds reads, potentially causing crashes or information disclosure via network connectivity.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2019-8260?

CVE-2019-8260 is a critical vulnerability in UltraVNC, published on 5 Mar 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

UltraVNC revision 1199 has a out-of-bounds read vulnerability in VNC client RRE decoder code, caused by multiplication overflow. This attack appears to be exploitable via network connectivity. This vulnerability has been fixed in revision 1200.

Weakness: CWE-125

Which versions are affected by CVE-2019-8260?

It affects 1 product.

Products include Uvnc Ultravnc.

How do I fix CVE-2019-8260?

No fix has been published for CVE-2019-8260 yet. Limit exposure of the affected software until one is available.

Is CVE-2019-8260 being exploited?

There is no known exploitation of CVE-2019-8260 in the wild and no public exploit code.

Sources

Also known as GHSA-vm9w-77x5-h7q8.