CVE-2015-8461

CVE-2015-8461 is a high-severity vulnerability in Isc Bind with a CVSS 2.0 base score of 7.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-362.

Key facts

• Severity: High (CVSS 2.0 base score 7.1)
• EPSS exploit prediction: 5% (91st percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-362
• Affected product: Isc Bind
• Published: 2015-12-16
• Last modified: 2026-06-17

Description

Race condition in resolver.c in named in ISC BIND 9.9.8 before 9.9.8-P2 and 9.10.3 before 9.10.3-P2 allows remote attackers to cause a denial of service (INSIST assertion failure and daemon exit) via unspecified vectors.

Frequently asked questions

What is CVE-2015-8461?

Race condition in resolver.c in named in ISC BIND 9.9.8 before 9.9.8-P2 and 9.10.3 before 9.10.3-P2 allows remote attackers to cause a denial of service (INSIST assertion failure and daemon exit) via unspecified vectors.

How severe is CVE-2015-8461?

CVE-2015-8461 has a CVSS 2.0 base score of 7.1, rated high severity.

Is CVE-2015-8461 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (91st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-8461?

CVE-2015-8461 primarily affects Isc Bind. In total, 164 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2015-8461?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2015-8461 published?

CVE-2015-8461 was published on 2015-12-16 and last updated on 2026-06-17.

References

• http://lists.fedoraproject.org/pipermail/package-announce/2015-December/174145.html
• http://lists.fedoraproject.org/pipermail/package-announce/2015-December/174252.html
• http://www.securityfocus.com/bid/79347
• http://www.securitytracker.com/id/1034419
• http://www.slackware.com/security/viewer.php?l=slackware-security&y=2015&m=slackware-security.539966
• https://kb.isc.org/article/AA-01319
• https://kb.isc.org/article/AA-01380
• https://kb.isc.org/article/AA-01438

Affected products (164)

• cpe:2.3:a:isc:bind:8.4.7:*:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.0:*:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.0.1:*:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.1:*:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.1.1:*:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.1.2:*:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.1.3:*:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.2:*:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.2.0:*:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.2.1:*:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.2.2:*:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.2.2:p3:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.2.3:*:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.2.4:*:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.2.5:*:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.2.6:*:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.2.7:*:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.3:*:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.3.0:*:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.3.1:*:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.3.2:*:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.3.3:*:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.4:*:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.4.0:*:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.4.0:rc1:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.4.1:*:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.4.2:*:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.4.3:*:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.4.3:rc1:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.5:*:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.5.0:*:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.5.0:rc1:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.5.1:*:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.5.1:rc1:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.5.1:rc2:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.5.2:*:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.5.2:rc1:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.5.3:*:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.5.3:rc1:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.6:*:*:*:*:*:*:*

More vulnerabilities in Isc Bind

• CVE-2008-0122 — Critical (CVSS 10.0): Off-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…
• CVE-2001-0011 — Critical (CVSS 10.0): Buffer overflow in nslookupComplain function in BIND 4 allows remote attackers to gain root privileges.
• CVE-2001-0013 — Critical (CVSS 10.0): Format string vulnerability in nslookupComplain function in BIND 4 allows remote attackers to gain root privileges.
• CVE-2001-0010 — Critical (CVSS 10.0): Buffer overflow in transaction signature (TSIG) handling code in BIND 8 allows remote attackers to gain root privileges.
• CVE-2000-1029 — Critical (CVSS 10.0): Buffer overflow in host command allows a remote attacker to execute arbitrary commands via a long response to an AXFR…
• CVE-1999-0837 — Critical (CVSS 10.0): Denial of service in BIND by improperly closing TCP sessions via so_linger.

All CVEs affecting Isc Bind →

Other CWE-362 (Race Condition) vulnerabilities

• CVE-2022-27626 — Critical (CVSS 10.0): A vulnerability regarding concurrent execution using shared resource with improper synchronization ('Race Condition')…
• CVE-2015-8556 — Critical (CVSS 10.0): Local privilege escalation vulnerability in the Gentoo QEMU package before 2.5.0-r1.
• CVE-2014-0703 — Critical (CVSS 10.0): Cisco Wireless LAN Controller (WLC) devices 7.4 before 7.4.110.0 distribute Aironet IOS software with a race condition…
• CVE-2010-1228 — Critical (CVSS 10.0): Multiple race conditions in the sandbox infrastructure in Google Chrome before 4.1.249.1036 have unspecified impact and…
• CVE-2008-6598 — Critical (CVSS 10.0): Multiple race conditions in WANPIPE before 3.3.6 have unknown impact and attack vectors related to "bri restart logic."
• CVE-2026-46137 — Critical (CVSS 9.8): In the Linux kernel, the following vulnerability has been resolved: mptcp: pm: ADD_ADDR rtx: fix potential…

Browse all CWE-362 (Race Condition) vulnerabilities →