In network HW, there is a possible system hang due to an uncaught exception.

published 2025-02-03 21 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-2187

cvss: 7.5; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.6%; EPSS 0.6% chance of exploitation in 30 days, percentile 51%
public exploits: 0; none known

In network HW, there is a possible system hang due to an uncaught exception. This could lead to remote denial of service with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: WCNCR00399035; Issue ID: MSV-2380.

CISA SSVC

Exploitation: none
Automatable: yes
Technical impact: partial
Assessed: 21 mo ago (2025-02-03)

Exploit prediction

0.64% chance of exploitation in the next 30 days, higher than 51% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CISA ADP	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CNA	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

MediaTek, Inc. MT7981, MT7986

Classification

Weakness

CWE-248 Uncaught Exception
CWE-754 Improper Check for Unusual or Exceptional Conditions

References

corp.mediatek.com /product-security-bulletin/February-2025
vendor-advisory

Sources

CVE List CVE-2025-20637
NVD CVE-2025-20637

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Summary