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CVE-2008-3493

24
FAUCET Score

CVE-2008-3493 describes a denial-of-service vulnerability in RealVNC Windows Client version 4.1.2.0, where a malicious VNC server can crash the vncviewer.exe application by sending a specially crafted frame buffer update packet. This vulnerability has a CVSS score of 5.0, indicating a medium severity, as it can be exploited remotely without authentication and only results in a partial impact on availability. While not actively exploited in the wild and not present in CISA's KEV catalog, a proof-of-concept exploit exists on ExploitDB, though there is minimal community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
4.1.2.0CPE matchmatch criteria
cpe:2.3:a:realvnc:realvnc_windows_client:4.1.2.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

AV:N/AC:L/Au:N/C:N/I:N/A:P

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
5.63%
Probability of exploitation in next 30 days
EPSS Percentile
92.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
ExploitDB: EDB-6181 · Aug 1, 2008
This CVE's current EPSS score of 0.0563 is in the 89th percentile among its peer group of 23,690 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (1)

redhatCVE-2008-3493

CVE-2008-3493

References

exchange.xforce.ibmcloud.com / vulnerabilities/44218
exploit-db.com / exploits/6181
securityfocus.com / bid/30499