9.1

CVE-2020-11580: pulsesecure pulse_connect_secure Improper Certificate Validation

CVSS: 9.1v3.1CriticalModified
Published 06-04-2020Last modified 04-08-2024
Open JSON

Vulnerability summary

CVE-2020-11580 is a critical (CVSS 9.1) Improper Certificate Validation vulnerability in pulsesecure pulse_connect_secure. EPSS estimates a 1.07% chance of exploitation in the next 30 days, higher than 64.3% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.1/10
010
Critical · v3.1 (NVD)
EPSS score
1.07%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference

Timeline

  1. 06-04-2020
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

Description

An issue was discovered in Pulse Secure Pulse Connect Secure (PCS) through 2020-04-06. The applet in tncc.jar, executed on macOS, Linux, and Solaris clients when a Host Checker policy is enforced, accepts an arbitrary SSL certificate.

CVSS metrics

2 scores · 1 source · 2 versions

EPSS trend

Probability

1.07%

Chance of exploitation in the next 30 days

Percentile

64%

Versus all other CVEs

30-day change

0.00 pp

From 1.07% on 19-09-2026

19-09-202619-10-2026
EPSS score
1.07%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (git.lsd.cat)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Pulsesecure2 products

1 vendor · 2 products

References

2 links