CVE-2020-8260

Exp

A vulnerability in the Pulse Connect Secure < 9.1R9 admin web interface could allow an authenticated attacker to perform an arbitrary code execution using uncontrolled gzip extraction.

Published: 2020-10-28 Last update: 2025-12-18 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2020-8260 is rated Critical Active Threat (93.8/100): CVSS High severity, with high exploitation likelihood (EPSS 96.48%, 100th percentile). CISA KEV confirms active exploitation (added 2021-11-03) affecting Ivanti / Pulse Connect Secure. a weakness (CWE-434) Unauthenticated remote administrative access may be possible. EPSS rose +23.45% over the last day, indicating growing attacker interest. The CISA remediation deadline has passed—treat as an emergency patch priority.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

CISA KEV Record for CVE-2020-8260

Name: Ivanti Pulse Connect Secure Code Execution Vulnerability · CISA KEV detail

Exploit added: 2021-11-03

Action due: 2022-05-03

Required action: Apply updates per vendor instructions.

Public exploit references (Exploit-DB) for CVE-2020-8260

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2020-8260

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 73.03% 96.48% +23.45%
2 2026-05-11 75.89% 73.03% -2.85%
3 2026-03-04 — 75.89% —

Full EPSS history (65 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2020-8260

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.2 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:H)
They need powerful rights—admin, root, or similar—before this pays off.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.2 5.9 [email protected]
7.2 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:H)
They need powerful rights—admin, root, or similar—before this pays off.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.2 5.9 134c704f-9b21-4f2e-91b3-4a467353bcc0
6.5 2.0 MEDIUM
AV:N/AC:L/Au:S/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:S)
A single authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 8.0 6.4 [email protected]

Weakness enumeration for CVE-2020-8260

Affected software / configurations for CVE-2020-8260

Vendor Product Version Raw CPE
ivanti connect_secure <= 9.0 cpe:2.3:a:ivanti:connect_secure:*:*:*:*:*:*:*:*
ivanti connect_secure 9.1 cpe:2.3:a:ivanti:connect_secure:9.1:-:*:*:*:*:*:*
ivanti connect_secure 9.1 cpe:2.3:a:ivanti:connect_secure:9.1:r1.0:*:*:*:*:*:*
ivanti connect_secure 9.1 cpe:2.3:a:ivanti:connect_secure:9.1:r2.0:*:*:*:*:*:*
ivanti connect_secure 9.1 cpe:2.3:a:ivanti:connect_secure:9.1:r3.0:*:*:*:*:*:*
ivanti connect_secure 9.1 cpe:2.3:a:ivanti:connect_secure:9.1:r4.0:*:*:*:*:*:*
ivanti connect_secure 9.1 cpe:2.3:a:ivanti:connect_secure:9.1:r4.1:*:*:*:*:*:*
ivanti connect_secure 9.1 cpe:2.3:a:ivanti:connect_secure:9.1:r4.2:*:*:*:*:*:*
ivanti connect_secure 9.1 cpe:2.3:a:ivanti:connect_secure:9.1:r4.3:*:*:*:*:*:*
ivanti connect_secure 9.1 cpe:2.3:a:ivanti:connect_secure:9.1:r5.0:*:*:*:*:*:*
ivanti connect_secure 9.1 cpe:2.3:a:ivanti:connect_secure:9.1:r6.0:*:*:*:*:*:*
ivanti connect_secure 9.1 cpe:2.3:a:ivanti:connect_secure:9.1:r7.0:*:*:*:*:*:*
ivanti connect_secure 9.1 cpe:2.3:a:ivanti:connect_secure:9.1:r8.0:*:*:*:*:*:*
ivanti connect_secure 9.1 cpe:2.3:a:ivanti:connect_secure:9.1:r8.1:*:*:*:*:*:*
ivanti connect_secure 9.1 cpe:2.3:a:ivanti:connect_secure:9.1:r8.2:*:*:*:*:*:*
ivanti connect_secure 9.1 cpe:2.3:a:ivanti:connect_secure:9.1:r8.4:*:*:*:*:*:*

References for CVE-2020-8260

cvelogic Threat Intelligence