7.5

CVE-2018-20809: ivanti connect_secure Improper Input Validation

CVSS: 7.5v3.0HighModified
Published 16-03-2019Last modified 16-09-2024
Open JSON

Vulnerability summary

CVE-2018-20809 is a high (CVSS 7.5) Improper Input Validation vulnerability in ivanti connect_secure. EPSS estimates a 2.73% chance of exploitation in the next 30 days, higher than 85.8% of scored vulnerabilities.

Overall risk
31/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.0 (NVD)
EPSS score
2.73%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 16-03-2019
    PublishedVulnerability first disclosed.
  2. 16-09-2024
    Last modifiedVulnerability information updated.

Description

A crafted message can cause the web server to crash with Pulse Secure Pulse Connect Secure (PCS) 8.3RX before 8.3R5 and Pulse Policy Secure 5.4RX before 5.4R5. This is not applicable to PCS 8.1RX.

CVSS metrics

2 scores · 1 source · 2 versions

EPSS trend

Probability

2.73%

Chance of exploitation in the next 30 days

Percentile

86%

Versus all other CVEs

30-day change

0.00 pp

From 2.73% on 19-09-2026

19-09-202619-10-2026
EPSS score
2.73%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Ivanti1 product
Pulsesecure1 product
  • pulse_policy_secure4.4:r1.0 | 4.4:r1.1 | 4.4:r11.1 | 4.4:r12.0 | 4.4:r13.1 | 4.4:r13.2 | 4.4:r13.3 | 4.4:r130 | 4.4:r2.0 | 4.4:r3.0 | 4.4:r4.0 | 4.4:r5.0 | 4.4:r6.0 | 4.4:r7.0 | 4.4:r8.0 | 5.0:r1.0 | 5.0:r10.0 | 5.0:r11.0 | 5.0:r12.1 | 5.0:r13.0 | 5.0:r13.1 | 5.0:r2.0 | 5.0:r3.0 | 5.0:r3.2 | 5.0:r4.0 | 5.0:r4.1 | 5.0:r5.0 | 5.0:r6.0 | 5.0:r7.0 | 5.0:r7.1 | 5.0:r8.0 | 5.0:r8.1 | 5.0:r9.0 | 5.1:r1.0 | 5.1:r1.1 | 5.1:r10.0 | 5.1:r11.0 | 5.1:r12.0 | 5.1:r12.1 | 5.1:r13.0 | 5.1:r14.0 | 5.1:r2.0 | 5.1:r2.1 | 5.1:r3.0 | 5.1:r3.2 | 5.1:r4.0 | 5.1:r5.0 | 5.1:r6.0 | 5.1:r7.0 | 5.1:r8.0 | 5.1:r9.0 | 5.1:r9.1 | 5.2:r1.0 | 5.2:r10.0 | 5.2:r11.0 | 5.2:r2.0 | 5.2:r3.0 | 5.2:r3.2 | 5.2:r4.0 | 5.2:r5.0 | 5.2:r6.0 | 5.2:r7.0 | 5.2:r7.1 | 5.2:r8.0 | 5.2:r9.0 | 5.2:r9.1 | 5.3:r1.0 | 5.3:r1.1 | 5.3:r10.0 | 5.3:r11.0 | 5.3:r12.0 | 5.3:r2.0 | 5.3:r3.0 | 5.3:r3.1 | 5.3:r4.0 | 5.3:r4.1 | 5.3:r5.0 | 5.3:r5.1 | 5.3:r5.2 | 5.3:r6.0 | 5.3:r7.0 | 5.3:r8.0 | 5.3:r8.1 | 5.3:r8.2 | 5.3:r9.0 | 5.4:r1 | 5.4:r2 | 5.4:r2.1 | 5.4:r3 | 5.4:r4

2 vendors · 2 products

References

1 links