CVE-2020-11582 json
An issue was discovered in Pulse Secure Pulse Connect Secure (PCS) through 2020-04-06.
published 2020-04-06 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-3932
- cvss
- 8.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.9%
- EPSS 0.9% chance of exploitation in 30 days, percentile 59%
- public exploits
- 0
- none known
Summary
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, launches a TCP server that accepts local connections on a random port. This can be reached by local HTTP clients, because up to 25 invalid lines are ignored, and because DNS rebinding can occur. (This server accepts, for example, a setcookie command that might be relevant to CVE-2020-11581 exploitation.)
Exploit prediction
0.88% chance of exploitation in the next 30 days, higher than 59% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- git.lsd.cat https://git.lsd.cat/g/pulse-host-checker-rce referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 8.8 | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 3.3 | AV:A/AC:L/Au:N/C:P/I:N/A:N |
Classification
- Weakness
-
- CWE-668 Exposure of Resource to Wrong Sphere
- Technology feeds
References
-
git.lsd.cat
/g/pulse-host-checker-rce
exploit, third-party-advisory
-
kb.pulsesecure.net
/articles/Pulse_Security_Advisories/SA44426
vendor-advisory
Sources
- CVE List CVE-2020-11582
- NVD CVE-2020-11582
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.