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CVE-2025-20704: mediatek, inc. mt6813, mt6835, mt6835t, mt6878, mt6878m, mt6897, mt6899, mt6991, mt8676, mt8678, mt8792, mt8863, mt8873, mt8883 Out-of-bounds Write

CVSS: 8.0v3.1HighModified
Published 01-09-2025Last modified 26-02-2026
Open JSON

Vulnerability summary

CVE-2025-20704 is a high (CVSS 8.0) Out-of-bounds Write vulnerability in mediatek, inc. mt6813, mt6835, mt6835t, mt6878, mt6878m, mt6897, mt6899, mt6991, mt8676, mt8678, mt8792, mt8863, mt8873, mt8883. EPSS estimates a 0.32% chance of exploitation in the next 30 days, higher than 23% of scored vulnerabilities.

Overall risk
32/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.0/10
010
High · v3.1 (CVE.org)
EPSS score
0.32%
0%100%
Low · +0.01 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 01-09-2025
    PublishedVulnerability first disclosed.
  2. 26-02-2026
    Last modifiedVulnerability information updated.

Description

In Modem, there is a possible out of bounds write due to a missing bounds check. This could lead to remote escalation of privilege, if a UE has connected to a rogue base station controlled by the attacker, with no additional execution privileges needed. User interaction is needed for exploitation. Patch ID: MOLY01516959; Issue ID: MSV-3502.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.32%

Chance of exploitation in the next 30 days

Percentile

23%

Versus all other CVEs

30-day change

+0.01 pp

From 0.30% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.32%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Mediatek2 products
Mediatek, inc.1 product

2 vendors · 3 products

References

1 links