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CVE-2007-4990
The swap_char2b function in X.Org X Font Server (xfs) before 1.0.5 allows context-dependent attackers to execute arbitrary code via (1)…
- 7.5HighCVSS base score
- 10.7%Exploitation in 30 daysEPSS · top 4.1% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
The swap_char2b function in X.Org X Font Server (xfs) before 1.0.5 allows context-dependent attackers to execute arbitrary code via (1) QueryXBitmaps and (2) QueryXExtents protocol requests with crafted size values that specify an arbitrary number of bytes to be swapped on the heap, which triggers heap corruption.
Timeline
ID reserved
By mitre
- 16 days later
· 16 days later
Published
- 17 years later
· 17 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 | High7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P |
- EPSS (exploitation in 30 days)
- 10.7% · top 4.1% of all CVEs (9 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.
Affected products
n/a
- affected n/a
References
38
- SUSE-SA:2007:054 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- 1018763 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
- 28542 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 200642 (opens in a new tab)vendor-advisoryx_refsource_SUNALERTx_transferred
- FEDORA-2007-4263 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- 20071003 rPSA-2007-0205-1 xorg-x11 xorg-x11-fonts xorg-x11-tools xorg-x11-xfs (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
- http://bugs.freedesktop.org/show_bug.cgi?id=12299 (opens in a new tab)x_refsource_CONFIRMx_transferred
- 28514 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 27052 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 20071002 Multiple Vendor X Font Server Multiple Vulnerabilities (opens in a new tab)third-party-advisoryx_refsource_IDEFENSEx_transferred
- 27060 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- ADV-2008-0924 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
- HPSBUX02303 (opens in a new tab)vendor-advisoryx_refsource_HPx_transferred
- [xorg-announce] 20071002 [ANNOUNCE] X.Org security advisory: multiple vulnerabilities in X font server (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- RHSA-2008:0029 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- 28004 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 27240 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- https://issues.rpath.com/browse/RPL-1756 (opens in a new tab)x_refsource_CONFIRMx_transferred
- 29420 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 27040 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- APPLE-SA-2008-03-18 (opens in a new tab)vendor-advisoryx_refsource_APPLEx_transferred
- 27176 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- GLSA-200710-11 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
- 27228 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- ADV-2007-3467 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
- RHSA-2008:0030 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- 103114 (opens in a new tab)vendor-advisoryx_refsource_SUNALERTx_transferred
- ADV-2008-0149 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
- MDKSA-2007:210 (opens in a new tab)vendor-advisoryx_refsource_MANDRIVAx_transferred
- 25898 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- http://bugs.gentoo.org/show_bug.cgi?id=194606 (opens in a new tab)x_refsource_CONFIRMx_transferred
- ADV-2007-3338 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
- 27560 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- oval:org.mitre.oval:def:11599 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
- http://docs.info.apple.com/article.html?artnum=307562 (opens in a new tab)x_refsource_CONFIRMx_transferred
- ADV-2007-3337 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
- xfs-queryxbitmaps-queryxextents-bo(36920) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
- 28536 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_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-2007-4971 (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)
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[](https://cveledger.app/cve/CVE-2007-4990)Record last updated .