7.5

CVE-2020-35733: erlang erlang\/otp Improper Certificate Validation

CVSS: 7.5v3.1HighModified
AliasesUBUNTU-CVE-2020-35733DEBIAN-CVE-2020-35733
Published 15-01-2021Last modified 04-08-2024
Open JSON

Vulnerability summary

CVE-2020-35733 is a high (CVSS 7.5) Improper Certificate Validation vulnerability in erlang erlang\/otp. EPSS estimates a 1.17% chance of exploitation in the next 30 days, higher than 66.8% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (NVD)
EPSS score
1.17%
0%100%
Low · +0.01 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 2 · Related 2
OPENSUSE-SU-2024:10740-1OPENSUSE-SU-2025:15740-1

Timeline

  1. 15-01-2021
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

Description

An issue was discovered in Erlang/OTP before 23.2.2. The ssl application 10.2 accepts and trusts an invalid X.509 certificate chain to a trusted root Certification Authority.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

1.17%

Chance of exploitation in the next 30 days

Percentile

67%

Versus all other CVEs

30-day change

+0.01 pp

From 1.15% on 19-09-2026

19-09-202619-10-2026
EPSS score
1.17%

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

Debian1 product
  • erlang< 1:23.2.2+dfsg-1
Erlang1 product
Fedoraproject1 product
Ubuntu1 product
  • erlang< 1:18.3-dfsg-1ubuntu3 | < 1:20.2.2+dfsg-1ubuntu2 | < 1:22.2.7+dfsg-1

4 vendors · 4 products

References

8 links