What’s Vulnerable › Vulnerabilities

CVE-2021-31578

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-02-06 · updated 2026-06-17
• Weakness: CWE-787

Description

In Boa, there is a possible escalation of privilege due to a stack buffer overflow. This could lead to remote escalation of privilege from a proximal attacker with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: A20210008; Issue ID: OSBNB00123241.

Affected products

• Mediatek En7528 Firmware: before tlm7.3.275.0-64 — fixed in tlm7.3.275.0-64
• Mediatek En7580 Firmware: before tlm7.3.275.0-64 — fixed in tlm7.3.275.0-64

How to fix

Upgrade to a fixed version: Mediatek En7528 Firmware tlm7.3.275.0-64; Mediatek En7580 Firmware tlm7.3.275.0-64. Check the vendor advisory for mitigations.

References

• https://corp.mediatek.com/product-security-acknowledgements
• https://corp.mediatek.com/product-security-acknowledgements

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