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VulnerabilityPublished

CVE-2025-20690: MediaTek MT6890, MT7615, MT7622, MT7663, MT7915, MT7916, MT7981, MT7986 · Out-of-bounds Read

Affects MediaTek MT6890, MT7615, MT7622, MT7663, MT7915, MT7916, MT7981, MT7986Source CVE Database V5

0

Not known to be exploited · CVSS 5.5 Medium : upgrade to 19.07 when convenient.

Data as of 26 Oct 2026, 12:29 UTC

CVSS 3.1 base score
5.5Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.1% chance of exploitation in 30 days – higher than 6% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 19.07
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 8 Jul 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

Upgrade MediaTek MT6890, MT7615, MT7622, MT7663, MT7915, MT7916, MT7981, MT7986 to 19.07.

Affected software

ProductAffectedFixed in
MediaTek, Inc. MT6890, MT7615, MT7622, MT7663, MT7915, MT7916, MT7981, MT7986Affected
  • <19.07
  • =21.02
Fixed in
  • 19.07

AI-suggested

European organizations should proactively identify devices using the affected MediaTek chipsets and running vulnerable SDK or openWRT versions. Network administrators should inventory and segment such devices to limit local user access and reduce exposure. Applying vendor patches promptly once available is critical; until then, consider upgrading to newer firmware versions that do not include the vulnerable driver or replacing affected hardware if feasible. Employ strict access controls and monitoring on network devices to detect unauthorized local access attempts. For openWRT-based devices, upgrading to the latest stable releases beyond 21.02 is recommended. Additionally, organizations should implement network segmentation to isolate critical infrastructure and reduce the risk of lateral movement from compromised devices. Regularly auditing device configurations and monitoring logs for anomalous behavior related to WLAN drivers can help detect exploitation attempts. Finally, educating users and administrators about the risks of local privilege misuse and enforcing least privilege principles will further reduce the attack surface.

Description

In wlan AP driver, there is a possible out of bounds read due to an incorrect bounds check. This could lead to local information disclosure with User execution privileges needed. User interaction is not needed for exploitation. Patch ID: WCNCR00418038; Issue ID: MSV-3478.

References

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