How severe is CVE-2020-8220?

CVE-2020-8220 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability high.

Is CVE-2020-8220 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-8220?

CVE-2020-8220 primarily affects Ivanti Connect Secure. In total, 24 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-8220?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2020-8220 published?

CVE-2020-8220 was published on 2020-07-30 and last updated on 2026-06-17.

CVE-2020-8220

CVE-2020-8220 is a medium-severity vulnerability in Ivanti Connect Secure with a CVSS 3.x base score of 6.5. 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-400.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 5.5
EPSS exploit prediction: 2% (83rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-400
Affected product: Ivanti Connect Secure
Published: 2020-07-30
Last modified: 2026-06-17

Description

A denial of service vulnerability exists in Pulse Connect Secure <9.1R8 that allows an authenticated attacker to perform command injection via the administrator web which can cause DOS.

Frequently asked questions

What is CVE-2020-8220?: A denial of service vulnerability exists in Pulse Connect Secure <9.1R8 that allows an authenticated attacker to perform command injection via the administrator web which can cause DOS.
How severe is CVE-2020-8220?: CVE-2020-8220 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability high.
Is CVE-2020-8220 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-8220?: CVE-2020-8220 primarily affects Ivanti Connect Secure. In total, 24 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-8220?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-8220 published?: CVE-2020-8220 was published on 2020-07-30 and last updated on 2026-06-17.

References

https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44516

Affected products (24)

cpe:2.3:a:ivanti:connect_secure:9.1:-:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:9.1:r1:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:9.1:r2:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:9.1:r3:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:9.1:r4:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:9.1:r4.1:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:9.1:r4.2:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:9.1:r4.3:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:9.1:r5:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:9.1:r6:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:9.1:r7:*:*:*:*:*:*
cpe:2.3:a:pulsesecure:pulse_connect_secure:*:*:*:*:*:*:*:*
cpe:2.3:a:ivanti:policy_secure:9.1:-:*:*:*:*:*:*
cpe:2.3:a:ivanti:policy_secure:9.1:r1:*:*:*:*:*:*
cpe:2.3:a:ivanti:policy_secure:9.1:r2:*:*:*:*:*:*
cpe:2.3:a:ivanti:policy_secure:9.1:r3:*:*:*:*:*:*
cpe:2.3:a:ivanti:policy_secure:9.1:r3.1:*:*:*:*:*:*
cpe:2.3:a:ivanti:policy_secure:9.1:r4:*:*:*:*:*:*
cpe:2.3:a:ivanti:policy_secure:9.1:r4.1:*:*:*:*:*:*
cpe:2.3:a:ivanti:policy_secure:9.1:r4.2:*:*:*:*:*:*
cpe:2.3:a:ivanti:policy_secure:9.1:r5:*:*:*:*:*:*
cpe:2.3:a:ivanti:policy_secure:9.1:r6:*:*:*:*:*:*
cpe:2.3:a:ivanti:policy_secure:9.1:r7:*:*:*:*:*:*
cpe:2.3:a:pulsesecure:pulse_policy_secure:*:*:*:*:*:*:*:*

More vulnerabilities in Ivanti Connect Secure

CVE-2021-22893 — Critical (CVSS 10.0): Pulse Connect Secure 9.0R3/9.1R1 and higher is vulnerable to an authentication bypass vulnerability exposed by the…
CVE-2019-11510 — Critical (CVSS 10.0): In Pulse Secure Pulse Connect Secure (PCS) 8.2 before 8.2R12.1, 8.3 before 8.3R7.1, and 9.0 before 9.0R3.4, an…
CVE-2016-4787 — Critical (CVSS 10.0): Pulse Connect Secure (PCS) 8.2 before 8.2r1, 8.1 before 8.1r2, 8.0 before 8.0r10, and 7.4 before 7.4r13.4 allow remote…
CVE-2025-22467 — Critical (CVSS 9.9): A stack-based buffer overflow in Ivanti Connect Secure before version 22.7R2.6 allows a remote authenticated attacker…
CVE-2024-21894 — Critical (CVSS 9.8): A heap overflow vulnerability in IPSec component of Ivanti Connect Secure (9.x, 22.x) and Ivanti Policy Secure allows…
CVE-2018-20813 — Critical (CVSS 9.8): An input validation issue has been found with login_meeting.cgi in Pulse Secure Pulse Connect Secure 8.3RX before 8.3R2.

All CVEs affecting Ivanti Connect Secure →

Other CWE-400 (Uncontrolled Resource Consumption) vulnerabilities

CVE-2026-46775 — Critical (CVSS 9.9): Vulnerability in Oracle REST Data Services (component: Core). Supported versions that are affected are 24.2.0-26.1.0.…
CVE-2025-61303 — Critical (CVSS 9.8): Hatching Triage Sandbox Windows 10 build 2004 (2025-08-14) and Windows 10 LTSC 2021(2025-08-14) contains a…
CVE-2025-43193 — Critical (CVSS 9.8): The issue was addressed with improved memory handling. This issue is fixed in macOS Sequoia 15.6, macOS Sonoma 14.7.7,…
CVE-2025-24269 — Critical (CVSS 9.8): The issue was addressed with improved memory handling. This issue is fixed in macOS Sequoia 15.4. An app may be able to…
CVE-2025-24264 — Critical (CVSS 9.8): The issue was addressed with improved memory handling. This issue is fixed in Safari 18.4, iOS 18.4 and iPadOS 18.4,…
CVE-2025-24260 — Critical (CVSS 9.8): The issue was addressed with improved memory handling. This issue is fixed in macOS Sequoia 15.4, macOS Sonoma 14.7.5,…

Browse all CWE-400 (Uncontrolled Resource Consumption) vulnerabilities →