CVE-2018-20809

mediumpriority · track · 31EPSS 0.027 · 86 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

2.73% (86th) EPSS

CVSS 5 · medium

Is it mine?

8 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-27

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

Technical severity, 0–10. One row per scoring source.

7.5

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5–7.5

v2.05mediumAV:N/AC:L/Au:N/C:N/I:N/A:Pprimary · NVD / NIST USexploitability 10 · impact 2.9

v3.07.5highCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 3.6

v3.06.9mediumCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-20USprimary

affected products (8)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
ivanti connect secure= 8.3nvdUScpe:2.3:a:ivanti:connect_secure:*:*:*:*:*:*:*:*
pulsesecure pulse policy secure= 4.4nvdUScpe:2.3:a:pulsesecure:pulse_policy_secure:*:*:*:*:*:*:*:*
pulsesecure pulse policy secure= 5.0nvdUScpe:2.3:a:pulsesecure:pulse_policy_secure:*:*:*:*:*:*:*:*
pulsesecure pulse policy secure= 5.1nvdUScpe:2.3:a:pulsesecure:pulse_policy_secure:*:*:*:*:*:*:*:*
pulsesecure pulse policy secure= 5.2nvdUScpe:2.3:a:pulsesecure:pulse_policy_secure:*:*:*:*:*:*:*:*
pulsesecure pulse policy secure= 5.3nvdUScpe:2.3:a:pulsesecure:pulse_policy_secure:*:*:*:*:*:*:*:*
pulsesecure pulse policy secure= 5.4nvdUScpe:2.3:a:pulsesecure:pulse_policy_secure:*:*:*:*:*:*:*:*

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd NVD CVE.org MITRE

published 2019-06-28modified 2026-06-17

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+25171 more

references (5)

External citations — patches, advisories, analysis.

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