CVE-2025-20728: In wlan STA driver, there is a possible out of bounds write due to an incorrect bounds check

Routine

HIGH 7.8DOWNGRADE

CVE-2025-20728 is a high-severity flaw (CVSS 7.8) affecting software development kit. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

In wlan STA driver, there is a possible out of bounds write due to an incorrect bounds check. This could lead to local escalation of privilege with User execution privileges needed. User interaction is not needed for exploitation. Patch ID: WCNCR00447115; Issue ID: MSV-4276.

Why this priority

High severity

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.1% (top 96%)
CISA exploited list	No
Weakness	CWE-122, CWE-787
Published	2025-11-04
Last modified	2026-10-18

Publisher (CNA): MediaTek, Inc. · Vendor: mediatek

Last updated 2026-10-18 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-11-04 07:15 UTCPublished CVE record published
2026-10-18 21:10 UTCUpdated Record last modified

mediatek software development kit DOWNGRADE

Affected: 3.7

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.7

1. Check installed version

apt-cache policy software-development-kit || rpm -q software-development-kit || software-development-kit --version

2. No fixed release: DOWNGRADE to a release before 3.7 (Debian / Ubuntu)

apt-cache madison software-development-kit sudo apt install software-development-kit=<VERSION_BEFORE_3.7> sudo apt-mark hold software-development-kit

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list software-development-kit sudo dnf downgrade software-development-kit-<VERSION_BEFORE_3.7> sudo dnf versionlock add software-development-kit

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

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-2025-20728?

software development kit: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2025-20728 being exploited?

CVE-2025-20728 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-2025-20728 affect?

CVE-2025-20728 affects software development kit. Severity is high (CVSS 7.8). In wlan STA driver, there is a possible out of bounds write due to an incorrect bounds check. This could lead to local escalation of privilege with User execution privileges needed. User interaction is not needed for exploitation. Patch ID:

How urgent is CVE-2025-20728?

Priority 28/100. High severity

Related CVEs

CVE-2025-20742 HIGH 8.0 UPGRADE MITIGATE In wlan AP driver, there is a possible out of bounds write due to an incorrect bounds check
CVE-2025-20733 HIGH 7.8 UPGRADE MITIGATE In wlan AP driver, there is a possible out of bounds write due to an incorrect bounds check
CVE-2025-20735 HIGH 7.8 UPGRADE MITIGATE In wlan AP driver, there is a possible out of bounds write due to an incorrect bounds check
CVE-2025-20737 HIGH 7.8 UPGRADE MITIGATE In wlan AP driver, there is a possible out of bounds write due to an incorrect bounds check
CVE-2025-20738 MEDIUM 6.7 UPGRADE MITIGATE In wlan AP driver, there is a possible out of bounds write due to an incorrect bounds check

References

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