CVE-2019-8273CWE-122

UltraVNC revision 1211 has a heap buffer overflow vulnerability in VNC server code inside file transfer request handler, which can potentially result in code…

published March 9, 2019

CVSS
—
EPSS
8%
Percentile
94.9
In the wild
Unconfirmed
What it is

⚠️ A heap buffer overflow in UltraVNC could let attackers take control of your system through file transfer requests! 🖥️ Think of it like a delivery driver who can access your entire home instead of just dropping off packages. If they get past the door, they can explore everywhere, potentially wreaking havoc inside! An attacker exploiting this vulnerability could gain code execution capabilities, opening the door to unauthorized access and possible control of the affected machine. While this vulnerability hasn’t been actively exploited in the wild, the potential for damage remains a serious concern.

Put simply

Think of it like a delivery driver who can access your entire home instead of just dropping off packages. If they get past the door, they can explore everywhere, potentially wreaking havoc inside! CVE-2019-8273 involves a heap buffer overflow in the file transfer request handler of UltraVNC's server code. This flaw allows attackers to send specially crafted requests that could lead to code execution.

What to do

An attacker exploiting this vulnerability could gain code execution capabilities, opening the door to unauthorized access and possible control of the affected machine. While this vulnerability hasn’t been actively exploited in the wild, the potential for damage remains a serious concern. To protect your systems, upgrade UltraVNC to revision 1212 immediately. Regularly audit your network for unauthorized access and ensure your firewall is configured to prevent unwanted connections. You've got this! Patch up, and your systems will be fortified against this sneaky vulnerability! 🛡️

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.08263 · 94.9th percentile
Weakness
CWE-122 · Heap-based Buffer Overflow
Published
2019-03-09T00:00Z
EPSS history
Timeline
  • 09 MAR 00:00Z
    UltraVNC revision 1211 has a heap buffer overflow vulnerability in VNC server code inside file transfer request handler, which can potentially result in code…
    cvelistv5