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CVE-2007-0493

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...

7.8 HighFix available

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."

Exploit likelihood

12.8%Down 13.6 points since Feb 4, 2022
90%50%10%1%

What each source reports

NVD Score used 7.8

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."

Record
CVE-2007-0493
CVSS 2.0
7.8 HighAV:N/AC:L/Au:N/C:N/I:N/A:C
Updated
2026-11-02
CVE List No score

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."

Record
CVE-2007-0493
Updated
2026-11-02
EUVDEUVD-2007-0491 No score

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."

Record
EUVD-2007-0491
Updated
2026-11-03
GitHub AdvisoriesGHSA-p6fj-c7mp-96mv No score

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...

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."

Record
GHSA-p6fj-c7mp-96mv
Updated
2026-11-02
OSV No score

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."

Record
CVE-2007-0493
Updated
2026-11-02
OSVDEBIAN-CVE-2007-0493 No score

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."

Record
DEBIAN-CVE-2007-0493
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
bind9
Debian:12
 before 1:9.3.4-2
1:9.3.4-2
bind9
Debian:13
 before 1:9.3.4-2
1:9.3.4-2
bind9
Debian:14
 before 1:9.3.4-2
1:9.3.4-2
bind
Red Hat:enterprise_linux:5::client_workstation
From an advisory covering 2 CVEs
 before 30:9.3.3-8.el5
30:9.3.3-8.el5
bind-chroot
Red Hat:enterprise_linux:5::client_workstation
From an advisory covering 2 CVEs
 before 30:9.3.3-8.el5
30:9.3.3-8.el5
bind-debuginfo
Red Hat:enterprise_linux:5::client_workstation
From an advisory covering 2 CVEs
 before 30:9.3.3-8.el5
30:9.3.3-8.el5
bind-devel
Red Hat:enterprise_linux:5::client_workstation
From an advisory covering 2 CVEs
 before 30:9.3.3-8.el5
30:9.3.3-8.el5
bind-libbind-devel
Red Hat:enterprise_linux:5::client_workstation
From an advisory covering 2 CVEs
 before 30:9.3.3-8.el5
30:9.3.3-8.el5
caching-nameserver
Red Hat:enterprise_linux:5::client_workstation
From an advisory covering 2 CVEs
 before 30:9.3.3-8.el5
30:9.3.3-8.el5
bind
Red Hat:enterprise_linux:5::client
From an advisory covering 2 CVEs
 before 30:9.3.3-8.el5
30:9.3.3-8.el5
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Affected packages
PackageAffectedFixed
bind-debuginfo
Red Hat:enterprise_linux:5::client
From an advisory covering 2 CVEs
 before 30:9.3.3-8.el5
30:9.3.3-8.el5
bind-libs
Red Hat:enterprise_linux:5::client
From an advisory covering 2 CVEs
 before 30:9.3.3-8.el5
30:9.3.3-8.el5
bind-sdb
Red Hat:enterprise_linux:5::client
From an advisory covering 2 CVEs
 before 30:9.3.3-8.el5
30:9.3.3-8.el5
bind-utils
Red Hat:enterprise_linux:5::client
From an advisory covering 2 CVEs
 before 30:9.3.3-8.el5
30:9.3.3-8.el5
bind
Red Hat:enterprise_linux:5::server
From an advisory covering 2 CVEs
 before 30:9.3.3-8.el5
30:9.3.3-8.el5
bind-chroot
Red Hat:enterprise_linux:5::server
From an advisory covering 2 CVEs
 before 30:9.3.3-8.el5
30:9.3.3-8.el5
bind-debuginfo
Red Hat:enterprise_linux:5::server
From an advisory covering 2 CVEs
 before 30:9.3.3-8.el5
30:9.3.3-8.el5
bind-devel
Red Hat:enterprise_linux:5::server
From an advisory covering 2 CVEs
 before 30:9.3.3-8.el5
30:9.3.3-8.el5
bind-libbind-devel
Red Hat:enterprise_linux:5::server
From an advisory covering 2 CVEs
 before 30:9.3.3-8.el5
30:9.3.3-8.el5
bind-libs
Red Hat:enterprise_linux:5::server
From an advisory covering 2 CVEs
 before 30:9.3.3-8.el5
30:9.3.3-8.el5
bind-sdb
Red Hat:enterprise_linux:5::server
From an advisory covering 2 CVEs
 before 30:9.3.3-8.el5
30:9.3.3-8.el5
bind-utils
Red Hat:enterprise_linux:5::server
From an advisory covering 2 CVEs
 before 30:9.3.3-8.el5
30:9.3.3-8.el5
caching-nameserver
Red Hat:enterprise_linux:5::server
From an advisory covering 2 CVEs
 before 30:9.3.3-8.el5
30:9.3.3-8.el5

History

History
RecordedChangedSources
affected, facts
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2007-0493 is a high vulnerability (CVSS 7.8) in Isc Bind, published January 25, 2007. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 12.8%, the 96th percentile. Fixed in bind9 1:9.3.4-2.

References

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