Is CVE-2021-33195 in the CISA KEV catalog?

No. CVE-2021-33195 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-33195?

CVE-2021-33195 has a CVSS v3 base score of 7.3 (HIGH).

What is the EPSS score for CVE-2021-33195?

CVE-2021-33195 has an EPSS score of 3.23% (87th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-33195?

Upgrade golang-1.15 on debian 11 to 1.15.9-5 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2021-33195

HIGHEPSS 87th pctl

7.3

CVSS v3

NVD

Description

Go before 1.15.13 and 1.16.x before 1.16.5 has functions for DNS lookups that do not validate replies from DNS servers, and thus a return value may contain an unsafe injection (e.g., XSS) that does not conform to the RFC1035 format.

CWE-74Injection

How to fix

Remediation Available

golang-1.15Debian

Fixed in:1.15.9-5CVE-2021-33195

Go Programming LanguageWindows application

Affected:1.16.0 1.16.5Fixed in:1.16.5https://go.dev

Affected:1.15.13Fixed in:1.15.13https://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 ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityLow

IntegrityLow

AvailabilityLow

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

Exploit Intelligence

3.23%probability of exploitation in 30 days

87thpercentile

Elevated risk: more likely to be exploited than 87% of all known CVEs.

References

Patch1

groups.google.com

Third-Party Advisory3

Related Vulnerabilities

Other CWE-74 (Injection) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2013-2251	Critical	9.8	100%	KEV	Fix
CVE-2023-22527	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2019-2725	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2022-46169	Critical	9.8	100%	KEV	Fix
CVE-2022-35914	Critical	9.8	100%	KEV	-
CVE-2019-17558	High	7.5	99%	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.