CVE-2023-20727 — In wlan, there is a possible out of bounds read due to a missing bounds check

In wlan, there is a possible out of bounds read due to a missing bounds check. This could lead to local information disclosure with System execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS07588531; Issue ID: ALPS07588531.

01What is this vulnerability?

In wlan, there is a possible out of bounds read due to a missing bounds check. This could lead to local information disclosure with System execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS07588531; Issue ID: ALPS07588531.

02Affected products

Vendor	Product	Versions
MediaTek, Inc.	MT6789, MT6835, MT6855, MT6879, MT6886, MT6895, MT6983, MT6985, MT8168, MT8365, MT8695, MT8766, MT8768, MT8781, MT8786, MT8789, MT8791T, MT8797	Android 12.0, 13.0 / Yocto 4.0

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2023-06-06T08:02:55.869Z
• Last modified: 2025-01-08T15:04:44.843Z

09References

• corp.mediatek.com — https://corp.mediatek.com/product-security-bulletin/June-2023