CVE-2023-32846
Published: 04 December 2023
Summary
CVE-2023-32846 is a high-severity Reachable Assertion (CWE-617) vulnerability in Mediatek Nr15. Its CVSS base score is 7.5 (High).
Operationally, ranked in the top 9.7% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis
CVE-2023-32846 is a denial-of-service vulnerability in MediaTek 5G Modem components stemming from improper error handling of malformed RRC messages. The flaw is tracked under CWE-617 and carries a CVSS 3.1 score of 7.5, reflecting network-accessible attack vectors that require no authentication or user interaction. Affected devices can experience a system crash when processing crafted messages, resulting in loss of availability.
An unauthenticated remote attacker can trigger the issue simply by sending malformed RRC messages to a vulnerable 5G modem, achieving a denial-of-service condition without any additional execution privileges.
MediaTek’s December 2023 security bulletin lists the issue as resolved under patch ID MOLY01128524 and internal reference MOLY01138453 (MSV-861), directing customers to apply the supplied modem firmware updates.
The associated EPSS score remains low and unchanged at 0.0539, indicating no material increase in observed exploitation interest since disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-37067
Vulnerability details
In 5G Modem, there is a possible system crash due to improper error handling. This could lead to remote denial of service when receiving malformed RRC messages, with no additional execution privileges needed. User interaction is not needed for exploitation.…
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Patch ID: MOLY01128524; Issue ID: MOLY01138453 (MSV-861).
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.