How severe is CVE-2021-22937?

CVE-2021-22937 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-22937 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 8% (94th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-22937?

CVE-2021-22937 primarily affects Ivanti Connect Secure. In total, 13 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-22937?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2021-22937 published?

CVE-2021-22937 was published on 2021-08-16 and last updated on 2026-06-17.

CVE-2021-22937

CVE-2021-22937 is a high-severity vulnerability in Ivanti Connect Secure with a CVSS 3.x base score of 7.2. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-434.

Key facts

Severity: High (CVSS 3.x base score 7.2)
CVSS v2: 6.5
EPSS exploit prediction: 8% (94th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-434
Affected product: Ivanti Connect Secure
Published: 2021-08-16
Last modified: 2026-06-17

Description

A vulnerability in Pulse Connect Secure before 9.1R12 could allow an authenticated administrator to perform a file write via a maliciously crafted archive uploaded in the administrator web interface.

Frequently asked questions

What is CVE-2021-22937?: A vulnerability in Pulse Connect Secure before 9.1R12 could allow an authenticated administrator to perform a file write via a maliciously crafted archive uploaded in the administrator web interface.
How severe is CVE-2021-22937?: CVE-2021-22937 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-22937 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 8% (94th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-22937?: CVE-2021-22937 primarily affects Ivanti Connect Secure. In total, 13 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-22937?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-22937 published?: CVE-2021-22937 was published on 2021-08-16 and last updated on 2026-06-17.

References

https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44858/?kA23Z000000L6oySAC

Affected products (13)

cpe:2.3:a:ivanti:connect_secure:9.1:-:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:9.1:r1.0:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:9.1:r10.0:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:9.1:r11.0:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:9.1:r2.0:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:9.1:r3.0:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:9.1:r4.0:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:9.1:r5.0:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:9.1:r6.0:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:9.1:r7.0:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:9.1:r8.0:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:9.1:r9.0:*:*:*:*:*:*
cpe:2.3:a:pulsesecure:pulse_connect_secure:*:*:*:*:*:*:*:*

More vulnerabilities in Ivanti Connect Secure

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