CVE-2024-21893
SSRF in Ivanti Connect Secure 21.12 … 9.1
Raw vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:NCVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.
Summary
CVE-2024-21893 is a high-severity SSRF (CWE-918) vulnerability in Ivanti Connect Secure. Its CVSS base score is 8.2 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique LSASS Memory (T1003.001); ranked in the top 0.0% of CVEs by exploit likelihood; CISA has added it to the Known Exploited Vulnerabilities catalog.
The strongest mitigations our analysis identified map to AC-4 (Information Flow Enforcement) and SI-10 (Information Input Validation) — see the control section below for these in your framework.
Deeper analysis AI-assisted summary
Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.
CVE-2024-21893 is a server-side request forgery vulnerability (CWE-918) residing in the SAML component of Ivanti Connect Secure versions 9.x and 22.x, Ivanti Policy Secure versions 9.x and 22.x, and Ivanti Neurons for ZTA. The flaw carries a CVSS 3.1 score of 8.2 and permits an unauthenticated attacker to reach restricted resources that should otherwise be inaccessible.
An attacker can exploit the issue over the network without credentials or user interaction to issue crafted requests from the affected server, resulting in high-impact confidentiality exposure combined with limited integrity effects. Because the vulnerability requires no authentication, remote adversaries, including automated scanners and threat actors, can target exposed Ivanti appliances directly.
Ivanti security advisories referenced in the supplied links address related issues in the same product families and direct customers to apply vendor-supplied patches. The CVE is also catalogued in CISA’s Known Exploited Vulnerabilities list, confirming that mitigation through updates or compensating controls is required for affected deployments.
The associated EPSS score has reached a peak of 0.9640 with a current value of 0.9432, indicating sustained and widespread exploitation interest following disclosure.
OWASP Top 10 for Web (2025)
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2024-19504
Vulnerability Data
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.
- CWE(s)
- KEV Date Added
- 31 January 2024
Related Threats
Threat-Actor AttributionAI
MITRE ATT&CK Enterprise Techniques
CVEs Like This One
Affected Assets
Mitigating Controls
Control response
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V1.3.6V1.5.3V5.3.2V10.4.7
Mitigating Controls (NIST 800-53 r5) AI
Information flow enforcement can restrict which destinations the server is allowed to contact on behalf of users.
Input validation directly stops untrusted URLs from being accepted and fetched without destination checks.
Boundary protection limits the network reach of server-initiated requests even if SSRF occurs.
Mitigating Controls (NIST CSF 2.0) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.
Runtime monitoring of web applications and services can detect anomalous outbound requests indicative of SSRF.
Vulnerability identification processes can discover and record SSRF flaws in web applications.
Network segmentation and egress controls can limit the damage from successful SSRF requests.
Secure development practices directly include input validation and destination allow-listing that prevent SSRF.
Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.