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CVE-2025-20633: In wlan AP driver, there is a possible out of bounds write due to an incorrect bounds check

37
Routine
HIGH 8.8UPGRADE

CVE-2025-20633 is a high-severity flaw (CVSS 8.8) affecting software development kit. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

In wlan AP driver, there is a possible out of bounds write due to an incorrect bounds check. This could lead to remote (proximal/adjacent) code execution with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: WCNCR00400889; Issue ID: MSV-2491.

Why this priority

  • High severity

A fixed release or distro patch exists.

Risk facts

CVSS score8.8 (High)
Attack vectorAdjacent network
Attack complexityLow
Privileges neededNone
User interactionNone
EPSS exploit chance0.3% (top 74%)
CISA exploited listNo
WeaknessCWE-787
Published2025-02-03
Last modified2026-06-17
Publisher (CNA): MediaTek, Inc. · Vendor: mediatek

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Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

mediatek software development kit UPGRADE
Affected: <= 7.4.0.1
Fixed in: newer than 7.4.0.1
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy software-development-kit || rpm -q software-development-kit || software-development-kit --version
2. UPGRADE to newer than 7.4.0.1 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade software-development-kit
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade software-development-kit
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-20633?

software development kit: upgrade to newer than 7.4.0.1. Exact commands for each OS are on this page.

Is CVE-2025-20633 being exploited?

CVE-2025-20633 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-20633 affect?

CVE-2025-20633 affects software development kit. Severity is high (CVSS 8.8). In wlan AP driver, there is a possible out of bounds write due to an incorrect bounds check. This could lead to remote (proximal/adjacent) code execution with no additional execution privileges needed. User interaction is not needed for exp

How urgent is CVE-2025-20633?

Priority 37/100. High severity

Related CVEs

References

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