CVE-2008-3493

Exp

vncviewer.exe in RealVNC Windows Client 4.1.2.0 allows remote VNC servers to cause a denial of service (application crash) via a crafted frame buffer update packet.

Published: 2008-08-06 Last update: 2026-04-23 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2008-3493 is rated High Exploit Risk (65.2/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 2.54%). 1 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2008-3493

EDB-ID Source Kind Published Link
6181 exploit_db edb 2008-08-01 Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2008-3493

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-09-26 2.01% 2.54% +0.53%
2 2025-08-06 1.68% 2.01% +0.33%
3 2025-03-30 — 1.68% —

Full EPSS history (10 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2008-3493

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2008-3493

OS Trackers for CVE-2008-3493

vendor priority summary link
redhat — — https://access.redhat.com/security/cve/CVE-2008-3493

Vendor comments (NVD) for CVE-2008-3493

  • Red Hat (2008-08-07T00:00:00)

    This flaw does not affect the Linux version of RealVNC as shipped in Red Hat Enterprise Linux.

Affected software / configurations for CVE-2008-3493

Vendor Product Version Raw CPE
realvnc realvnc_windows_client 4.1.2.0 cpe:2.3:a:realvnc:realvnc_windows_client:4.1.2.0:*:*:*:*:*:*:*

References for CVE-2008-3493

cvelogic Threat Intelligence