How severe is CVE-2024-21893?

No CVSS score has been assigned to CVE-2024-21893 yet. Review the advisory details and affected package list to assess your exposure.

Which products are affected by CVE-2024-21893?

CVE-2024-21893 affects the following products: ivanti connect secure, ivanti policy secure.

How do I patch CVE-2024-21893?

No patch has shipped for CVE-2024-21893 yet — track the ivanti connect secure advisory for a fixed release and apply the workarounds below in the meantime.

How do I detect CVE-2024-21893 across my infrastructure?

Inventory every ivanti connect secure deployment and check each version against the affected-products list above. Because the exploit targets the running system rather than your application code, also watch for exploitation at the network and runtime layer — O3 flags the exploit behaviour from runtime telemetry and egress traffic even before a vulnerable build is confirmed.

How do I mitigate CVE-2024-21893 if there is no patch (or I can't update yet)?

Cut exposure now: restrict the management/admin interface to trusted networks, segment the device, and apply the vendor's recommended configuration mitigations and any WAF/IPS signature. O3's runtime protection blocks the exploit chain at execution, holding the line on unpatched or end-of-life systems until you can patch.

How does O3 Security protect against CVE-2024-21893?

O3 detects and blocks CVE-2024-21893 exploitation at runtime: eBPF exploit-chain detection, plus L7 egress monitoring that catches the post-exploitation callback and severs the attacker's outbound channel.

Is CVE-2024-21893 actively exploited in the wild?

Yes. There are 7 known exploit references for CVE-2024-21893, including 5 in-the-wild exploitations observed on GitHub and other sources. Treat this as actively exploitable and prioritize patching immediately. All exploit code should only be run in an isolated sandbox environment for research or authorized testing — never against production systems without explicit written authorization.

What is the EPSS score for CVE-2024-21893?

CVE-2024-21893 has an EPSS (Exploit Prediction Scoring System) score of 100.0%, placing it in the 100th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. A score above 50% indicates significantly elevated exploitation risk — immediate patching is strongly recommended.

Is CVE-2024-21893 in the CISA Known Exploited Vulnerabilities catalog?

Yes. CVE-2024-21893 (Ivanti Connect Secure, Policy Secure, and Neurons Server-Side Request Forgery (SSRF) Vulnerability) was added to CISA's Known Exploited Vulnerabilities (KEV) catalog on 2024-01-31. CISA required all US federal civilian agencies to remediate this vulnerability by 2024-02-02. The required action was: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. This CVE has been used in known ransomware campaigns. Being listed in the KEV catalog is the strongest possible confirmation of active exploitation — treat this as a critical priority.

What type of vulnerability is CVE-2024-21893?

CVE-2024-21893 is classified as Server-Side Request Forgery (SSRF) (CWE-918). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation. This is a high-impact weakness class that often enables remote code execution or data exposure.

Which products and versions are affected by CVE-2024-21893?

CVE-2024-21893 affects ivanti connect secure (9 versions, e.g. 9.0, 9.1, 21.9…); ivanti policy secure (8 versions, e.g. 9.0, 9.1, 22.1…). Check the affected-products list on this page against your deployed version to confirm exposure.

Is there exploit tooling available for CVE-2024-21893?

A Nuclei detection template exists for CVE-2024-21893, meaning automated scanners can fingerprint it. Public exploit tooling significantly increases real-world risk — prioritize patching and ensure detection coverage. Exploit tooling should only ever be used in isolated, authorized testing environments.

When was CVE-2024-21893 published, and has it been updated?

CVE-2024-21893 was published on January 31, 2024 and was last updated on August 4, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

CISA KEV · ACTIVELY EXPLOITED

CVE-2024-21893

CVE-2024-21893 is a Server-Side Request Forgery (SSRF) vulnerability in ivanti connect secure. It is in CISA's Known Exploited Vulnerabilities catalog (added 2024-01-31) and has been used in ransomware campaigns — treat it as actively exploited and patch now. O3 Security detects and blocks CVE-2024-21893 exploitation at runtime via eBPF exploit-chain detection and L7 egress monitoring, even on unpatched systems.

A server-side request forgery vulnerability in the SAML component of Ivanti Connect Secure (9.x, 22.x) and Ivanti Policy Secure (9.x, 22.x) and Ivanti Neurons for ZTA allows an attacker…

Published

Jan 31, 2024

Updated

Aug 4, 2026

Affected

2 products

Patched

See advisory

Exploits

7 known

Exploitation data as of Aug 26, 2026 · OSV.dev, NVD, CISA KEV, FIRST.org (EPSS)

Exploitation Status

Actively exploited in the wild

Confirmed by CISA's Known Exploited Vulnerabilities catalog on 2024-01-31 — including use in ransomware campaigns. Federal agencies were required to remediate by 2024-02-02.
CISA assesses this as automatable — exploitation doesn’t require manual, per-target effort, which raises the odds of mass scanning and opportunistic attacks.

Exploitation and automatability from CISA (KEV catalog and SSVC triage) for CVE-2024-21893.

EPSS Exploitation Probability

via FIRST.org ↗

100.0%probability of exploitation in next 30 days

Very High Risk0.00%

Lower risk than most CVEs100th percentile — riskier than 100% of all scored CVEsHighest risk

EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.

Description

A server-side request forgery vulnerability in the SAML component of Ivanti Connect Secure (9.x, 22.x) and Ivanti Policy Secure (9.x, 22.x) and Ivanti Neurons for ZTA allows an attacker to access certain restricted resources without authentication.

Affected Products

2 products · 17 configurations

Application

connect secureivanti

9 versions

9.09.121.921.1222.122.222.322.422.6

Application

policy secureivanti

8 versions

9.09.122.122.222.322.422.522.6

Exploits & PoCs

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.