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CVE-2006-3740
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…
- 7.2HighCVSS base score
- 0.52%Exploitation in 30 daysEPSS · top 56% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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.
Timeline
ID reserved
By redhat
- 55 days later
· 55 days later
Published
- 18 years later
· 18 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | High7.2 | AV:L/AC:L/Au:N/C:C/I:C/A:C |
- EPSS (exploitation in 30 days)
- 0.52% · top 56% of all CVEs (10 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.2.
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)
- EUVD EUVD-2006-3734 (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
[](https://cveledger.app/cve/CVE-2006-3740)Record last updated .