CVE-2021-22900: Ivanti Connect Secure File Upload Vulnerability Exploitation (CVE-2021-22900)
The short version: A vulnerability allowed multiple unrestricted uploads in Pulse Connect Secure before 9.1R11.4 that could lead to an authenticated administrator to perform a file write via a maliciously crafted archive upload in the administrator web interface. BreachRisk discovers exposed instances from your attack surface and flags this finding so you can prioritize by real-world breach risk.
At a glance
| Fact | Detail |
|---|---|
| Our severity take | Moderate — BreachRisk score 4.9 (impact 3, likelihood 3) |
| CVSS v3.1 (NVD) | Unknown at time of writing |
| In CISA KEV? | Unknown at time of writing — check the KEV catalog |
| Known exploited? | Unknown at time of writing |
| Requires authenticated session? | Unknown at time of writing |
| CVE | CVE-2021-22900 |
What you need to know
Ivanti Connect Secure appears vulnerable to exploitation of file upload vulnerability (CVE-2021-22900).
- How they find it — internet-facing exposure of the affected product is discoverable by routine scanning.
- How they use it — attackers exploit the vulnerability against reachable instances.
- What it leads to — compromise of the affected service and, depending on placement, a foothold for further movement.
How serious we see it
Moderate — based on BreachRisk impact and likelihood scoring for this threat definition (score 4.9/9). Treat internet-facing instances as priority; confirm exposure and patch status before assuming you're clear.
Recommendations
- Apply security update to exposed Ivanti Connect Secure application.
- Restrict access to affected Ivanti Connect Secure application to only trusted IP addresses.
How BreachRisk sees it
BreachRisk discovers internet-facing assets tied to this threat, fingerprints the product where possible, and flags exposure for CVE-2021-22900. Where authorized, it can go beyond detection with a bounded, non-disruptive check rather than leaving you with a maybe. Continuous outside-in coverage means the exposed service is already on your radar ranked by how it actually gets used against you.