7.5

CVE-2022-27536: golang go Improper Certificate Validation

Modified
AliasesGO-2022-0434BIT-golang-2022-27536ALPINE-CVE-2022-27536
Published 20-04-2022Last modified 03-08-2024

Vulnerability summary

CVE-2022-27536 is a high (CVSS 7.5) Improper Certificate Validation vulnerability in golang go. EPSS estimates a 1.47% chance of exploitation in the next 30 days, higher than 73.7% of scored vulnerabilities.

Priority
Prioritisesevere

Severe, CVSS 7.5 (NVD); no exploitation reported by the 5 checked sources; EPSS 1% (FIRST, 03-11-2026)

Source freshness unavailable

How is this decided?
CVSS score
7.5/10
010
High · v3.1 (NVD)
EPSS score
1.47%
0%100%
Low · -0.01 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 3 · Related 3
OPENSUSE-SU-2024:11991-1SUSE-SU-2022:1410-1SUSE-SU-2023:2312-1

Timeline

  1. 20-04-2022
    PublishedVulnerability first disclosed.
  2. 03-08-2024
    Last modifiedVulnerability information updated.

Description

Certificate.Verify in crypto/x509 in Go 1.18.x before 1.18.1 can be caused to panic on macOS when presented with certain malformed certificates. This allows a remote TLS server to cause a TLS client to panic.

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

1.47%

Chance of exploitation in the next 30 days

Percentile

74%

Versus all other CVEs

30-day change

Decrease -0.01 pp

From 1.48% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Alpine1 product
  • go≥ 1.18.0, < 1.18.1-r0
Go1 product
  • stdlib≥ 1.18.0-0, < 1.18.1
Golang1 product
  • go≥ 1.18.0, < 1.18.1

3 vendors · 3 products

References

9 links