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Vulnerability details: VCID-2c71-gzfy-2qhr
Vulnerability ID VCID-2c71-gzfy-2qhr
Aliases CVE-2015-5477
Summary A vulnerability in BIND could lead to a Denial of Service condition.
Status Published
Exploitability 2.0
Weighted Severity 3.4
Risk 6.8
Affected and Fixed Packages Package Details
Weaknesses (2)
CWE-456 Missing Initialization of a Variable
CWE-617 Reachable Assertion
System Score Found at
epss 0.92752 https://api.first.org/data/v1/epss?cve=CVE-2015-5477
epss 0.92752 https://api.first.org/data/v1/epss?cve=CVE-2015-5477
epss 0.92752 https://api.first.org/data/v1/epss?cve=CVE-2015-5477
epss 0.92752 https://api.first.org/data/v1/epss?cve=CVE-2015-5477
cvssv2 6.8 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2015-5477.json
https://api.first.org/data/v1/epss?cve=CVE-2015-5477
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-5477
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
1247361 https://bugzilla.redhat.com/show_bug.cgi?id=1247361
793903 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=793903
CVE-2015-5477 Exploit https://github.com/robertdavidgraham/cve-2015-5477/blob/34137c71a7fb4e3fa894b045583e67d7b46d62cc/tkill.c
CVE-2015-5477 Exploit https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/multiple/dos/37721.c
CVE-2015-5477;OSVDB-125438 Exploit https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/multiple/dos/37723.py
GLSA-201510-01 https://security.gentoo.org/glsa/201510-01
RHSA-2015:1513 https://access.redhat.com/errata/RHSA-2015:1513
RHSA-2015:1514 https://access.redhat.com/errata/RHSA-2015:1514
RHSA-2015:1515 https://access.redhat.com/errata/RHSA-2015:1515
RHSA-2016:0078 https://access.redhat.com/errata/RHSA-2016:0078
RHSA-2016:0079 https://access.redhat.com/errata/RHSA-2016:0079
USN-2693-1 https://usn.ubuntu.com/2693-1/
Data source Exploit-DB
Date added Aug. 5, 2015
Description ISC BIND 9 - TKEY Remote Denial of Service (PoC)
Ransomware campaign use Unknown
Source publication date Aug. 5, 2015
Exploit type dos
Platform multiple
Source update date Jan. 11, 2018
Data source Metasploit
Description This module sends a malformed TKEY query, which exploits an error in handling TKEY queries on affected BIND9 'named' DNS servers. As a result, a vulnerable named server will exit with a REQUIRE assertion failure. This condition can be exploited in versions of BIND between BIND 9.1.0 through 9.8.x, 9.9.0 through 9.9.7-P1 and 9.10.0 through 9.10.2-P2.
Note 
Stability:
  - crash-service-down
SideEffects: []
Reliability: []
Ransomware campaign use Unknown
Source publication date July 28, 2015
Source URL https://github.com/rapid7/metasploit-framework/tree/master/modules/auxiliary/dos/dns/bind_tkey.rb
Vector: AV:N/AC:L/Au:S/C:N/I:N/A:C Found at https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Exploit Prediction Scoring System (EPSS)
Percentile 0.99755
EPSS Score 0.92752
Published At April 1, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-01T13:11:49.765660+00:00 Gentoo Importer Import https://security.gentoo.org/glsa/201510-01 38.0.0