AUGUST 4, 2026
Live Feed
Back to database
Case File

CVE-2020-8617

HIGH · CVSS 7.5 EPSS 93.42% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2020-05-19 · Last synced 2026-08-04

CyberRota Analysis

This is a high severity vulnerability with a CVSS score of 7.5. Public exploit code or proof-of-concept references have been detected in its references. Its EPSS score suggests a 93.4% probability of exploitation in the next 30 days.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

External Security References

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2020-8617
Severity
HIGH
CVSS
7.5
EPSS
93.42%

Original NVD Description

Using a specially-crafted message, an attacker may potentially cause a BIND server to reach an inconsistent state if the attacker knows (or successfully guesses) the name of a TSIG key used by the server. Since BIND, by default, configures a local session key even on servers whose configuration does not otherwise make use of it, almost all current BIND servers are vulnerable. In releases of BIND dating from March 2018 and after, an assertion check in tsig.c detects this inconsistent state and deliberately exits. Prior to the introduction of the check the server would continue operating in an inconsistent state, with potentially harmful results.

Related CVEs

Other vulnerabilities affecting the same vendor(s)