CVE-2007-4990
HIGH · CVSS 7.5EPSS 10.7%EU EUVD
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.
Key facts
- CVSS score
- 7.5 (v2.0)
- Severity
- HIGH
- CVSS vector
AV:N/AC:L/Au:N/C:P/I:P/A:P- Weakness (CWE)
- CWE-189
- EPSS score
- 10.7% (96th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2007-4971)
- Published
- October 5, 2007
- NVD last modified
- June 16, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2007-4971 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.
View on the EU Vulnerability DatabaseAffected products
- x.org / x font server
References
- http://bugs.freedesktop.org/show_bug.cgi?id=12299
- http://bugs.gentoo.org/show_bug.cgi?id=194606
- http://docs.info.apple.com/article.html?artnum=307562
- http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c01323725
- http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=602
- http://lists.apple.com/archives/security-announce/2008/Mar/msg00001.html
- http://lists.freedesktop.org/archives/xorg-announce/2007-October/000416.html
- http://secunia.com/advisories/27040
- http://secunia.com/advisories/27052
- http://secunia.com/advisories/27060
- http://secunia.com/advisories/27176
- http://secunia.com/advisories/27228
- http://secunia.com/advisories/27240
- http://secunia.com/advisories/27560
- http://secunia.com/advisories/28004
- http://secunia.com/advisories/28514
- http://secunia.com/advisories/28536
- http://secunia.com/advisories/28542
- http://secunia.com/advisories/29420
- http://security.gentoo.org/glsa/glsa-200710-11.xml
- http://sunsolve.sun.com/search/document.do?assetkey=1-26-103114-1
- http://sunsolve.sun.com/search/document.do?assetkey=1-66-200642-1
- http://www.mandriva.com/security/advisories?name=MDKSA-2007:210
- http://www.novell.com/linux/security/advisories/2007_54_xorg.html
- http://www.redhat.com/support/errata/RHSA-2008-0029.html
- http://www.redhat.com/support/errata/RHSA-2008-0030.html
- http://www.securityfocus.com/archive/1/481432/100/0/threaded
- http://www.securityfocus.com/bid/25898
- http://www.securitytracker.com/id?1018763
- http://www.vupen.com/english/advisories/2007/3337
- http://www.vupen.com/english/advisories/2007/3338
- http://www.vupen.com/english/advisories/2007/3467
- http://www.vupen.com/english/advisories/2008/0149
- http://www.vupen.com/english/advisories/2008/0924/references
- https://exchange.xforce.ibmcloud.com/vulnerabilities/36920
- https://issues.rpath.com/browse/RPL-1756
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11599
- https://www.redhat.com/archives/fedora-package-announce/2007-December/msg00352.html
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
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