CVE-2022-1183Network attack vector

Remote service crash via premature TLS socket destruction

Published May 19, 2022 · Updated Sep 17, 2024

Denial of service in BIND 9 9.18.0 through 9.18.2 and 9.19.0 allows remote attackers to crash named via an early TLS disconnect. A configured HTTP TLS listener with a defined endpoint destroys a TLS socket object prematurely, triggering an assertion failure in named. The daemon is exposed only when named.conf references http in a listen-on statement; DNS over TLS without DNS over HTTPS is unaffected.

CVSS severity7.5
High
EPSS probability6.03%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Denial of service in BIND 9 9.18.0 through 9.18.2 and 9.19.0 allows remote attackers to crash named via an early TLS disconnect. A configured HTTP TLS listener with a defined endpoint destroys a TLS socket object prematurely, triggering an assertion failure in named. The daemon is exposed only when named.conf references http in a listen-on statement; DNS over TLS without DNS over HTTPS is unaffected.

The record

CVE
CVE-2022-1183
Published
May 19, 2022
Updated
Sep 17, 2024
Vendor
Internet Systems Consortium
Product
BIND 9
Classifications
CWE-617, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 19, 2022CVE publishedPublication date reported by the CVE source.
  2. Sep 17, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=Development Branch 9.19 9.19.0
  2. Affected versionversion=Open Source Branch 9.18 9.18.0 through versions before 9.18.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Internet Systems Consortium · BIND 9version=Development Branch 9.19 9.19.0; version=Open Source Branch 9.18 9.18.0 through versions before 9.18.3

Published CVSS scores

7.5Internet Systems Consortium (ISC)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.0Internet Systems Consortium (ISC)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:F/RL:O/RC:C
4.3NIST National Vulnerability DatabaseAV:N/AC:M/Au:N/C:N/I:N/A:P

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-617Reachable Assertion
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo