The CMsgReader::readRect function in the VNC Viewer component in RealVNC VNC Free Edition 4.0 through 4.1.2, Enterprise Edition E4.0…

Description

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."

Scores

EPSS (exploitation in 30 days)

4.1% · top 9.3% of all CVEs (4 Nov 2026)

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 10.0.

Weakness

• n/a
• CWE-20 (opens in a new tab)All about CWE-20 and its CVEs

Affected products

• n/a

  • affected n/a

References (17)

• GLSA-200903-17 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
• http://www.realvnc.com/products/upgrade.html (opens in a new tab)x_refsource_CONFIRMx_transferred
• FEDORA-2009-1001 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
• http://www.realvnc.com/products/free/4.1/release-notes.html (opens in a new tab)x_refsource_CONFIRMx_transferred
• 33689 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• 34184 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• http://sunsolve.sun.com/search/document.do?assetkey=1-21-140455-01-1 (opens in a new tab)x_refsource_CONFIRMx_transferred
• 248526 (opens in a new tab)vendor-advisoryx_refsource_SUNALERTx_transferred
• 31832 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
• realvnc-cmsgreader-code-execution(45969) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
• 33263 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
• 32317 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• ADV-2008-2868 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
• [vnc-list] 20081126 VNC Viewer Vulnerability CVE-2008-4770 (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
• realvnc-rfb-protocol-code-execution(47937) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
• oval:org.mitre.oval:def:9367 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
• RHSA-2009:0261 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisories (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2008-4770](https://trackcve.app/badge/CVE-2008-4770.svg)](https://trackcve.app/cve/CVE-2008-4770)

Record last updated 7 Aug 2024, 10:31 UTC.