9.8

CVE-2020-16088: openbsd Improper Authentication

CVSS: 9.8v3.1CriticalModified
Published 28-07-2020Last modified 04-08-2024
Open JSON

Vulnerability summary

CVE-2020-16088 is a critical (CVSS 9.8) Improper Authentication vulnerability in openbsd. EPSS estimates a 2.46% chance of exploitation in the next 30 days, higher than 84.2% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.8/10
010
Critical · v3.1 (NVD)
EPSS score
2.46%
0%100%
Low · +0.05 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference

Timeline

  1. 28-07-2020
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

Description

iked in OpenIKED, as used in OpenBSD through 6.7, allows authentication bypass because ca.c has the wrong logic for checking whether a public key matches.

CVSS metrics

2 scores · 1 source · 2 versions

EPSS trend

Probability

2.46%

Chance of exploitation in the next 30 days

Percentile

84%

Versus all other CVEs

30-day change

+0.05 pp

From 2.42% on 18-09-2026

18-09-202618-10-2026
EPSS score
2.46%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (ftp.openbsd.org)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Openbsd1 product

1 vendor · 1 product

References

4 links