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Vulnerability record · CVE-2007-0493 · published 25 January 2007

CVE-2007-0493: Isc bind vulnerability

Isc · Bind

Use-after-free vulnerability in ISC BIND 9.3.0 up to 9.3.3, 9.4.0a1 up to 9.4.0a6, 9.4.0b1 up to 9.4.0b4, 9.4.0rc1, and 9.5.0a1 (Bind Forum only) allows remote attackers to cause a denial of service (named daemon crash) via unspecified vectors that cause named to "dereference a freed fetch context."

7.8 CVSS 2.0 High EPSS 12% · top 3.9%
7.8CVSS 2.0 base score
12%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
94References
16 Jun 2026Last modified by NVD

Description

Use-after-free vulnerability in ISC BIND 9.3.0 up to 9.3.3, 9.4.0a1 up to 9.4.0a6, 9.4.0b1 up to 9.4.0b4, 9.4.0rc1, and 9.5.0a1 (Bind Forum only) allows remote attackers to cause a denial of service (named daemon crash) via unspecified vectors that cause named to "dereference a freed fetch context."

AV:N/AC:L/Au:N/C:N/I:N/A:C

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://docs.info.apple.com/article.html?artnum=305530
http://fedoranews.org/cms/node/2507
http://fedoranews.org/cms/node/2537
http://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2007-003.txt.asc
http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?lang=en&cc=us&objectID=c01070495
http://lists.apple.com/archives/security-announce/2007/May/msg00004.html
http://lists.grok.org.uk/pipermail/full-disclosure/2007-January/052018.html
http://lists.suse.com/archive/suse-security-announce/2007-Jan/0016.html
http://marc.info/?l=bind-announce&m=116968519321296&w=2
http://secunia.com/advisories/23904 Vendor Advisory
http://secunia.com/advisories/23924
http://secunia.com/advisories/23943
http://secunia.com/advisories/23972
http://secunia.com/advisories/23974
http://secunia.com/advisories/23977
http://secunia.com/advisories/24014
http://secunia.com/advisories/24048
http://secunia.com/advisories/24054
http://secunia.com/advisories/24129
http://secunia.com/advisories/24203
http://secunia.com/advisories/24930
http://secunia.com/advisories/24950
http://secunia.com/advisories/25402
http://secunia.com/advisories/25649
http://security.freebsd.org/advisories/FreeBSD-SA-07:02.bind.asc
http://security.gentoo.org/glsa/glsa-200702-06.xml
http://securitytracker.com/id?1017561
http://slackware.com/security/viewer.php?l=slackware-security&y=2007&m=slackware-security.494157
http://www.isc.org/index.pl?/sw/bind/bind-security.php
http://www.isc.org/index.pl?/sw/bind/view/?release=9.2.8 Patch
http://www.isc.org/index.pl?/sw/bind/view/?release=9.3.4 Patch
http://www.mandriva.com/security/advisories?name=MDKSA-2007:030
http://www.openpkg.com/security/advisories/OpenPKG-SA-2007.007.html
http://www.redhat.com/support/errata/RHSA-2007-0057.html
http://www.securityfocus.com/archive/1/458066/100/0/threaded
http://www.securityfocus.com/bid/22229
http://www.trustix.org/errata/2007/0005
http://www.ubuntu.com/usn/usn-418-1
http://www.vupen.com/english/advisories/2007/0349
http://www.vupen.com/english/advisories/2007/1401

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

10.0CVE-2008-0122Isc bind vulnerabilityOff-by-one error in the inet_network function in libbind in ISC BIND 9.4.2 and earlier, as used in libc in FreeBSD 6.2 through 7.0-PRERELEASE, allows…EPSS 12%10.0CVE-2001-0010Isc bind vulnerabilityBuffer overflow in transaction signature (TSIG) handling code in BIND 8 allows remote attackers to gain root privileges.EPSS 32%10.0CVE-2001-0011Isc bind vulnerabilityBuffer overflow in nslookupComplain function in BIND 4 allows remote attackers to gain root privileges.EPSS 7.7%10.0CVE-2001-0013Isc bind vulnerabilityFormat string vulnerability in nslookupComplain function in BIND 4 allows remote attackers to gain root privileges.EPSS 11%10.0CVE-2000-1029Isc bind vulnerabilityBuffer overflow in host command allows a remote attacker to execute arbitrary commands via a long response to an AXFR query.EPSS 14%10.0CVE-1999-0837Isc bind vulnerabilityDenial of service in BIND by improperly closing TCP sessions via so_linger.EPSS 2.7%10.0CVE-1999-0009Data general dg ux vulnerabilityInverse query buffer overflow in BIND 4.9 and BIND 8 Releases.EPSS 29%9.8CVE-2026-3593Isc bind use after free vulnerabilityA use-after-free vulnerability exists within the DNS-over-HTTPS implementation. This issue affects BIND 9 versions 9.20.0 through 9.20.22, 9.21.0 thr…EPSS 1.1%

Source: NIST National Vulnerability Database (record CVE-2007-0493), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.