CVE-2025-20637: In network HW, there is a possible system hang due to an uncaught exception

Q: How do I fix CVE-2025-20637?

software development kit: upgrade to newer than 7.6.7.0. Exact commands for each OS are on this page.

Q: Is CVE-2025-20637 being exploited?

CVE-2025-20637 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2025-20637 affect?

CVE-2025-20637 affects software development kit. Severity is high (CVSS 7.5). 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: WCNCR0039903

Q: How urgent is CVE-2025-20637?

Priority 44/100. High severity; Remotely exploitable, no login, no user action

This month

HIGH 7.5REMOTEUPGRADE

CVE-2025-20637 is a high-severity flaw (CVSS 7.5) affecting software development kit. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

High severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.6% (top 49%)
CISA exploited list	No
Weakness	CWE-248, CWE-754
Published	2025-02-03
Last modified	2026-06-17

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

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

Am I affected?

Timeline

2025-02-03 04:15 UTCPublished CVE record published
2026-06-17 08:41 UTCUpdated Record last modified

mediatek software development kit UPGRADE

Affected: <= 7.6.7.0

Fixed in: newer than 7.6.7.0

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 7.6.7.0 (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-2025-20637?

software development kit: upgrade to newer than 7.6.7.0. Exact commands for each OS are on this page.

Is CVE-2025-20637 being exploited?

CVE-2025-20637 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-2025-20637 affect?

CVE-2025-20637 affects software development kit. Severity is high (CVSS 7.5). 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: WCNCR0039903

How urgent is CVE-2025-20637?

Priority 44/100. High severity; Remotely exploitable, no login, no user action

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References

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