9.8

CVE-2020-26542: percona percona_server Improper Authentication

CVSS: 9.8v3.1CriticalModified
AliasesCGA-43vj-2xh6-fxffCGA-4vwh-g854-fxr2CGA-7mhv-96g7-q7rj
Published 09-11-2020Last modified 04-08-2024
Open JSON

Vulnerability summary

CVE-2020-26542 is a critical (CVSS 9.8) Improper Authentication vulnerability in percona percona_server. EPSS estimates a 1.54% chance of exploitation in the next 30 days, higher than 74.5% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.8/10
010
Critical · v3.1 (NVD)
EPSS score
1.54%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 0 · Related 2
CGA-5CRM-52G2-495HCGA-7PJH-GRXC-VXQ7

Timeline

  1. 09-11-2020
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

Description

An issue was discovered in the MongoDB Simple LDAP plugin through 2020-10-02 for Percona Server when using the SimpleLDAP authentication in conjunction with Microsoft’s Active Directory, Percona has discovered a flaw that would allow authentication to complete when passing a blank value for the account password, leading to access against the service integrated with which Active Directory is deployed at the level granted to the authenticating account.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

1.54%

Chance of exploitation in the next 30 days

Percentile

75%

Versus all other CVEs

30-day change

0.00 pp

From 1.54% on 20-09-2026

20-09-202620-10-2026
EPSS score
1.54%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Chainguard8 products
  • percona-server-8.0All versions (No fix recorded)
  • percona-server-8.4All versions (No fix recorded)
  • percona-server-9.0All versions (No fix recorded)
  • percona-server-9.1All versions (No fix recorded)
  • percona-server-9.4All versions (No fix recorded)
Wolfi4 products
  • percona-server-8.4All versions (No fix recorded)
  • percona-server-9.1All versions (No fix recorded)
  • percona-server-9.5All versions (No fix recorded)
  • percona-server-9.6All versions (No fix recorded)
Percona1 product

3 vendors · 13 products

References

4 links