Integer overflow in the scan_cidfont function in X.Org 6.8.2 and XFree86 X server allows local users to execute arbitrary code via crafted…

Description

Integer overflow in the scan_cidfont function in X.Org 6.8.2 and XFree86 X server allows local users to execute arbitrary code via crafted (1) CMap and (2) CIDFont font data with modified item counts in the (a) begincodespacerange, (b) cidrange, and (c) notdefrange sections.

Scores

EPSS (exploitation in 30 days)

0.52% · top 56% of all CVEs (5 Nov 2026)

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.2.

Weakness

• n/a

Affected products

• n/a

  • affected n/a

References (39)

• 23907 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• RHSA-2006:0666 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
• http://support.avaya.com/elmodocs2/security/ASA-2006-191.htm (opens in a new tab)x_refsource_CONFIRMx_transferred
• 21900 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• MDKSA-2006:164 (opens in a new tab)vendor-advisoryx_refsource_MANDRIVAx_transferred
• 21904 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• SUSE-SR:2006:023 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
• 21864 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• 21894 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• USN-344-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
• 21889 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• 21908 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• RHSA-2006:0665 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
• 22141 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• http://support.avaya.com/elmodocs2/security/ASA-2006-190.htm (opens in a new tab)x_refsource_CONFIRMx_transferred
• ADV-2007-1171 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
• DSA-1193 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
• 22080 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• https://issues.rpath.com/browse/RPL-614 (opens in a new tab)x_refsource_CONFIRMx_transferred
• http://www.vmware.com/support/esx25/doc/esx-254-200702-patch.html (opens in a new tab)x_refsource_CONFIRMx_transferred
• 22332 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• 22560 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• 20070330 VMSA-2007-0002 VMware ESX security updates (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
• 23033 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• 20060912 rPSA-2006-0167-1 xorg-x11 xorg-x11-fonts xorg-x11-tools xorg-x11-xfs (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
• 20060912 Multiple Vendor X Server CID-keyed Fonts 'scan_cidfont()' Integer Overflow Vulnerability (opens in a new tab)third-party-advisoryx_refsource_IDEFENSEx_transferred
• oval:org.mitre.oval:def:9454 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
• GLSA-200609-07 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
• 102780 (opens in a new tab)vendor-advisoryx_refsource_SUNALERTx_transferred
• 24636 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• ADV-2007-0322 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
• 21890 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• 19974 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
• 1016828 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
• ADV-2006-3581 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
• 21924 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• ADV-2006-3582 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
• 23899 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• xorg-server-scancidfont-overflow(28890) (opens in a new tab)vdb-entryx_refsource_XFx_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-2006-3740](https://trackcve.app/badge/CVE-2006-3740.svg)](https://trackcve.app/cve/CVE-2006-3740)

Record last updated 7 Aug 2024, 18:39 UTC.