Is CVE-2021-36221 in the CISA KEV catalog?

No. CVE-2021-36221 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-36221?

CVE-2021-36221 has a CVSS v3 base score of 5.9 (MEDIUM).

What is the EPSS score for CVE-2021-36221?

CVE-2021-36221 has an EPSS score of 3.13% (86th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-36221?

Upgrade golang-1.15 on debian 11 to 1.15.15-1~deb11u1 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2021-36221

MEDIUMEPSS 86th pctl

5.9

CVSS v3

NVD

Description

Go before 1.15.15 and 1.16.x before 1.16.7 has a race condition that can lead to a net/http/httputil ReverseProxy panic upon an ErrAbortHandler abort.

CWE-362Race Condition

How to fix

Remediation Available

golang-1.15Debian

Fixed in:1.15.15-1~deb11u1CVE-2021-36221

Go Programming LanguageWindows application

Affected:1.16.0 1.16.7Fixed in:1.16.7https://go.dev

Affected:1.15.15Fixed in:1.15.15https://go.dev

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityHigh

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploit Intelligence

3.13%probability of exploitation in 30 days

86thpercentile

Elevated risk: more likely to be exploited than 86% of all known CVEs.

References

Patch1

cert-portal.siemens.com

Third-Party Advisory6

Other references5

Related Vulnerabilities

Other CWE-362 (Race Condition) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2024-6387	High	8.1	100%	-	Fix
CVE-2023-36884	High	7.5	99%	KEV + Ransom	Fix
CVE-2018-15473	Medium	5.3	99%	-	Fix
CVE-2024-27983	High	8.2	87%	-	Fix
CVE-2014-0226	Medium	6.8	86%	-	Fix
CVE-2016-5195	High	7.0	84%	KEV	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.