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Known exploited · Ivanti

CVE-2019-11510: Ivanti Pulse Connect Secure Arbitrary File Read Vulnerability

What it is

Ivanti Pulse Connect Secure contains an arbitrary file read vulnerability that allows an unauthenticated remote attacker with network access via HTTPS to send a specially crafted URI.

Added November 3, 2021Due May 3, 2022CISA KEV catalog 2026.10.01

Vendor
Ivanti
Product
Pulse Connect Secure
Added to KEV
November 3, 2021
CISA due date
May 3, 2022
Ransomware use
Known

What CISA requires

Apply updates per vendor instructions.

Forensic triage

No

What to do now

  1. Find every instance of Pulse Connect Secure you run, including the forgotten ones, and check its version against the vendor advisory.
  2. Apply the vendor's fix or mitigation, before May 3, 2022 if you are bound by CISA's deadline, sooner if it faces the internet.
  3. Assume it was tried against you already: look for signs of exploitation from the date it was added, not from the day you patched.
  4. Until every instance is patched, block the attack at the edge: a WAF in blocking mode stops path traversal attempts.

CVE-2019-11510 in the National Vulnerability Database

The Dome

Block it at the edge while you patch

The Dome's WAF runs the OWASP Core Rule Set in blocking mode and stops path traversal attempts before they reach your application.

See the Dome

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Train the engineers who fix it

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Source: CISA Known Exploited Vulnerabilities Catalog (public domain), catalog version 2026.10.01.