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TI-2008-04553 Aliases CVE-2008-4770GHSA-88j9-g2xv-54vp

The CMsgReader::readRect function in the VNC Viewer component in RealVNC VNC Free Edition…

Priority MEDIUM 50CWE-20Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
— Not recorded in CVSS 2.0
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
Complete · Complete · Complete
Fix status
Fixed

Attack profile from CVSS 2.0 · NVD. Fix status from CNA and Red Hat.

Summary

The CMsgReader::readRect function in the VNC Viewer component in RealVNC VNC Free Edition 4.0 through 4.1.2, Enterprise Edition E4.0 through E4.4.2, and Personal Edition P4.0 through P4.4.2 allows remote VNC servers to execute arbitrary code via crafted RFB protocol data, related to "encoding type."

Why it matters now

EPSS 0.04052 90th percentileScored 2026-11-07
Fix Fixed Red Hat: 1 advisory

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 6

CPEVersionsRoleVendor
cpe:2.3:a:realvnc:realvnc:4.0:*:free:*:*:*:*:*4.0VulnerableRealvnc
cpe:2.3:a:realvnc:realvnc:4.1.2:*:free:*:*:*:*:*4.1.2VulnerableRealvnc
cpe:2.3:a:realvnc:realvnc:4.4.2:*:enterprise:*:*:*:*:*4.4.2VulnerableRealvnc
cpe:2.3:a:realvnc:realvnc:e4.0:*:enterprise:*:*:*:*:*e4.0VulnerableRealvnc
cpe:2.3:a:realvnc:realvnc:p4.0:*:personal:*:*:*:*:*p4.0VulnerableRealvnc
cpe:2.3:a:realvnc:realvnc:p4.4.2:*:personal:*:*:*:*:*p4.4.2VulnerableRealvnc
  • cpe:2.3:a:realvnc:realvnc:4.0:*:free:*:*:*:*:* Versions 4.0 Vulnerable ·Realvnc
  • cpe:2.3:a:realvnc:realvnc:4.1.2:*:free:*:*:*:*:* Versions 4.1.2 Vulnerable ·Realvnc
  • cpe:2.3:a:realvnc:realvnc:4.4.2:*:enterprise:*:*:*:*:* Versions 4.4.2 Vulnerable ·Realvnc
  • cpe:2.3:a:realvnc:realvnc:e4.0:*:enterprise:*:*:*:*:* Versions e4.0 Vulnerable ·Realvnc
  • cpe:2.3:a:realvnc:realvnc:p4.0:*:personal:*:*:*:*:* Versions p4.0 Vulnerable ·Realvnc
  • cpe:2.3:a:realvnc:realvnc:p4.4.2:*:personal:*:*:*:*:* Versions p4.4.2 Vulnerable ·Realvnc

Remediation

Red Hat 1 advisory

  • RHSA-2009:0261 Released 2009-02-11 · Red Hat rating Moderate
    vnc security update
    • Red Hat Desktop version 3 vnc-4.0-0.beta4.1.8, vnc-4.0-0.beta4.1.8.i386, vnc-server-4.0-0.beta4.1.8 +1
    • Red Hat Enterprise Linux (v. 5 server) vnc-4.1.2-14.el5_3.1, vnc-4.1.2-14.el5_3.1.i386, vnc-4.1.2-14.el5_3.1.ia64 +5
    • Red Hat Enterprise Linux AS version 3 vnc-4.0-0.beta4.1.8, vnc-4.0-0.beta4.1.8.i386, vnc-4.0-0.beta4.1.8.ia64 +5
    • Red Hat Enterprise Linux AS version 4 vnc-4.0-12.el4_7.1, vnc-4.0-12.el4_7.1.i386, vnc-4.0-12.el4_7.1.ia64 +5
    • Red Hat Enterprise Linux Desktop (v. 5 client) vnc-4.1.2-14.el5_3.1, vnc-4.1.2-14.el5_3.1.i386, vnc-server-4.1.2-14.el5_3.1 +1
    • Red Hat Enterprise Linux Desktop version 4 vnc-4.0-12.el4_7.1, vnc-4.0-12.el4_7.1.i386, vnc-server-4.0-12.el4_7.1 +1
    • Red Hat Enterprise Linux ES version 3 vnc-4.0-0.beta4.1.8, vnc-4.0-0.beta4.1.8.i386, vnc-4.0-0.beta4.1.8.ia64 +3
    • Red Hat Enterprise Linux ES version 4 vnc-4.0-12.el4_7.1, vnc-4.0-12.el4_7.1.i386, vnc-4.0-12.el4_7.1.ia64 +3
    • Red Hat Enterprise Linux WS version 3 vnc-4.0-0.beta4.1.8, vnc-4.0-0.beta4.1.8.i386, vnc-4.0-0.beta4.1.8.ia64 +3
    • Red Hat Enterprise Linux WS version 4 vnc-4.0-12.el4_7.1, vnc-4.0-12.el4_7.1.i386, vnc-4.0-12.el4_7.1.ia64 +3

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Desktop version 3Fixed RHSA-2009:0261
Red Hat Enterprise Linux (v. 5 server)Fixed RHSA-2009:0261
Red Hat Enterprise Linux AS version 3Fixed RHSA-2009:0261
Red Hat Enterprise Linux AS version 4Fixed RHSA-2009:0261
Red Hat Enterprise Linux Desktop (v. 5 client)Fixed RHSA-2009:0261
Red Hat Enterprise Linux Desktop version 4Fixed RHSA-2009:0261
Red Hat Enterprise Linux ES version 3Fixed RHSA-2009:0261
Red Hat Enterprise Linux ES version 4Fixed RHSA-2009:0261
Red Hat Enterprise Linux WS version 3Fixed RHSA-2009:0261
Red Hat Enterprise Linux WS version 4Fixed RHSA-2009:0261

Timeline

  1. 2026-10-02 Threatist record created from CVE-2008-4770
  2. 2026-10-03 Alias added: GHSA-88j9-g2xv-54vp

References

Patch 1

Advisory 5

Other 4

  • TI-2013-05659 RealVNC VNC 5.0.6 on Mac OS X, Linux, and UNIX allows local users to gain privileges via… CVSS 2.0HIGH 7.2

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences