Ivanti Pulse Connect Secure Use-After-Free Vulnerability
Ivanti Pulse Connect Secure contains a use-after-free vulnerability that allow a remote, unauthenticated attacker to execute code via license services.
- Vendor
- Ivanti
- Product
- Pulse Connect Secure
- CVSS
- 10.0
- EPSS (exploit probability)
- 47.5%
- Status
- kevransomware use
- CISA patch-by (BOD 22-01)
- Added to KEV
Is CVE-2021-22893 being exploited?
Yes. CISA added CVE-2021-22893 to its Known Exploited Vulnerabilities catalog on . CISA only lists a CVE when it has reliable evidence of exploitation in the wild. CISA marks it as known to be used in ransomware campaigns.
FIRST's EPSS model puts the probability of exploitation activity in the next 30 days at 47.5% (scored November 7, 2026).
- CISA KEV[ LISTED ]
- ENISA EUVD (exploited)[ — ]
- CIRCL KEV[ — ]
Catalog snapshot 2026-11-13. Full cross-catalog view: /kev-comparison
CVE-2021-22893 timeline
Every event links to its source. Catalog dates are each catalog's own; day offsets count from NVD publication. Data: JSON
What to do
CISA required actionApply updates per vendor instructions.
US federal civilian agencies must remediate by (181 days after listing) under BOD 22-01. Everyone else: that deadline is a sensible upper bound, not a target. Vendor guidance and the NVD record are linked under Source above.
Other Ivanti Connect Secure CVEs we track
| CVE / Vulnerability | Severity | CVSS | EPSS | Added to KEV |
|---|---|---|---|---|
| CVE-2026-118527 Ivanti Connect Secure Predictable Identifier File Uploadwrite-up | [ UNKNOWN ] | — | 0.8% | |
| CVE-2026-111357 Ivanti Connect Secure Missing Authentication for Critical Function Vulnerabilitywrite-up | [ HIGH ] | 7.0 | 0.5% | |
| CVE-2026-104935 Ivanti Connect Secure Authentication Bypass by Spoofingwrite-up | [ HIGH ] | 8.6 | 88.9% | |
| CVE-2025-22457 Ivanti Connect Secure, Policy Secure, and ZTA Gateways Stack-Based Buffer Overflow Vulnerabilityransomware use | [ CRITICAL ] | 9.0 | 100.0% | |
| CVE-2025-0282 Ivanti Connect Secure, Policy Secure, and ZTA Gateways Stack-Based Buffer Overflow Vulnerabilityransomware use | [ CRITICAL ] | 9.0 | 100.0% | |
| CVE-2024-21893 Ivanti Connect Secure, Policy Secure, and Neurons Server-Side Request Forgery (SSRF) Vulnerabilityransomware use | [ HIGH ] | 8.2 | 100.0% | |
| CVE-2024-21887 Ivanti Connect Secure / Policy Secure Command Injectionransomware usewrite-up | [ CRITICAL ] | 9.1 | 100.0% | |
| CVE-2023-46805 Ivanti Connect Secure / Policy Secure Authentication Bypassransomware usewrite-up | [ HIGH ] | 8.2 | 100.0% |