CVE-2024-21388
Published: 30 January 2024
Summary
CVE-2024-21388 is a medium-severity Improper Input Validation (CWE-20) vulnerability in Microsoft Edge Chromium. Its CVSS base score is 6.5 (Medium).
Operationally, ranked in the top 3.8% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis
Microsoft Edge (Chromium-based) contains an elevation of privilege vulnerability tracked as CVE-2024-21388. The flaw is associated with CWE-20 and carries a CVSS 3.1 score of 6.5 reflecting a network attack vector, high attack complexity, no required privileges or user interaction, changed scope, and low impacts to confidentiality, integrity, and availability.
An unauthenticated remote attacker can exploit the issue to obtain limited elevated privileges on an affected system. The published EPSS score stands at 0.2424 with an identical peak value, indicating moderate but stable exploitation probability since disclosure.
The Microsoft Security Response Center advisory linked in the references provides official guidance on available updates and mitigation steps for the vulnerability.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2024-19099
Vulnerability details
Microsoft Edge (Chromium-based) Elevation of Privilege Vulnerability
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Security testing and developer training directly verify and enforce proper input validation, reducing exploitability of injection and malformed-data weaknesses.
Security testing and evaluation at multiple SDLC stages directly detects missing or flawed input validation, with the required remediation process ensuring fixes are applied.
Directly implements checks on information inputs to reject invalid data before processing.
Spam protection mechanisms perform filtering and detection on inbound/outbound messages, directly compensating for missing or weak input validation of unsolicited content.