Is CVE-2021-23050 in the CISA KEV catalog?

No. CVE-2021-23050 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-23050?

CVE-2021-23050 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2021-23050?

CVE-2021-23050 has an EPSS score of 0.45% (36th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-23050?

Upgrade big-ip advanced web application firewall to 16.0.1.2 or later. Fixes are available for 3 affected products.

CVE & CISA-KEV Catalog

CVE-2021-23050

HIGH

7.5

CVSS v3

NVD

Description

On BIG-IP Advanced WAF and BIG-IP ASM version 16.0.x before 16.0.1.2 and 15.1.x before 15.1.3 and NGINX App Protect on all versions before 3.5.0, when a cross-site request forgery (CSRF)-enabled policy is configured on a virtual server, an undisclosed HTML response may cause the bd process to terminate. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

CWE-352Cross-Site Request Forgery

How to fix

Remediation Available

big-ip advanced web application firewallNVD

Affected:>= 16.0.0, < 16.0.1.2Fixed in:16.0.1.2CVE-2021-23050derived from NVD

big-ip application security managerNVD

Affected:>= 16.0.0, < 16.0.1.2Fixed in:16.0.1.2CVE-2021-23050derived from NVD

nginx app protectNVD

Affected:>= 3.0.0, < 3.5.0Fixed in:3.5.0CVE-2021-23050derived from NVD

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

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

0.45%probability of exploitation in 30 days

36thpercentile

Low risk: more likely to be exploited than 36% of all known CVEs.

References

Vendor Advisory1

support.f5.com

Related Vulnerabilities

Other CWE-352 (Cross-Site Request Forgery) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2016-6277	High	8.8	100%	KEV	-
CVE-2014-0054	Medium	6.8	91%	-	Fix
CVE-2013-6429	Medium	6.8	90%	-	Fix
CVE-2022-41622	High	8.8	88%	-	-
CVE-2018-7700	High	8.8	75%	-	-
CVE-2015-2295	Medium	6.8	66%	-	-

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Markdown

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HTML

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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.