CVE & CISA-KEV Catalog

CVE-2021-22978

HIGH
8.3
CVSS v3
NVD

Description

On BIG-IP version 16.0.x before 16.0.1, 15.1.x before 15.1.1, 14.1.x before 14.1.3.1, 13.1.x before 13.1.3.5, and all 12.1.x and 11.6.x versions, undisclosed endpoints in iControl REST allow for a reflected XSS attack, which could lead to a complete compromise of BIG-IP if the victim user is granted the admin role. Note: Software versions which have reached End of Software Development (EoSD) are not evaluated.

CWE-79Cross-Site Scripting (XSS)

How to fix

Remediation Available
big-ip access policy managerNVD
Affected:>= 16.0.0, < 16.0.1Fixed in:16.0.1CVE-2021-22978derived from NVD
big-ip advanced firewall managerNVD
Affected:>= 16.0.0, < 16.0.1Fixed in:16.0.1CVE-2021-22978derived from NVD
big-ip advanced web application firewallNVD
Affected:>= 16.0.0, < 16.0.1Fixed in:16.0.1CVE-2021-22978derived from NVD
big-ip analyticsNVD
Affected:>= 16.0.0, < 16.0.1Fixed in:16.0.1CVE-2021-22978derived from NVD
big-ip application acceleration managerNVD
Affected:>= 16.0.0, < 16.0.1Fixed in:16.0.1CVE-2021-22978derived from NVD
big-ip application security managerNVD
Affected:>= 16.0.0, < 16.0.1Fixed in:16.0.1CVE-2021-22978derived from NVD
big-ip ddos hybrid defenderNVD
Affected:>= 16.0.0, < 16.0.1Fixed in:16.0.1CVE-2021-22978derived from NVD
big-ip domain name systemNVD
Affected:>= 16.0.0, < 16.0.1Fixed in:16.0.1CVE-2021-22978derived from NVD
big-ip fraud protection serviceNVD
Affected:>= 16.0.0, < 16.0.1Fixed in:16.0.1CVE-2021-22978derived from NVD
big-ip global traffic managerNVD
Affected:>= 16.0.0, < 16.0.1Fixed in:16.0.1CVE-2021-22978derived from NVD
big-ip link controllerNVD
Affected:>= 16.0.0, < 16.0.1Fixed in:16.0.1CVE-2021-22978derived from NVD
big-ip local traffic managerNVD
Affected:>= 16.0.0, < 16.0.1Fixed in:16.0.1CVE-2021-22978derived from NVD
big-ip policy enforcement managerNVD
Affected:>= 16.0.0, < 16.0.1Fixed in:16.0.1CVE-2021-22978derived from NVD
big-ip ssl orchestratorNVD
Affected:>= 16.0.0, < 16.0.1Fixed in:16.0.1CVE-2021-22978derived 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 ComplexityHigh
Privileges RequiredNone
User InteractionRequired
ScopeChanged

Impact

ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

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

Exploit Intelligence

0.79%probability of exploitation in 30 days
52ndpercentile

Moderate risk: more likely to be exploited than 52% of all known CVEs.

References

Vendor Advisory1

Related Vulnerabilities

Other CWE-79 (Cross-Site Scripting (XSS)) vulnerabilities, ordered by exploit likelihood. View all

CVESeverityCVSSEPSSExploitedFix
CVE-2020-11022Medium6.999%-Fix
CVE-2019-3929Critical9.899%KEVFix
CVE-2020-9496Medium6.199%--
CVE-2023-28341Medium6.199%-Fix
CVE-2018-12998Medium6.198%--
CVE-2025-4123High7.698%-Fix
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CVE-2021-22978 severity badge

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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.