What is CVE-2022-26437?

CVE-2022-26437 is a critical-severity vulnerability in Mediatek Mt2621, classified under Use of Uninitialized Resource. CVSS score: 9.8/10. Published 2022-08-01.

How severe is CVE-2022-26437?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Vulnerability in Mediatek Mt2621

CVE-2022-26437

In httpclient, there is a possible out of bounds write due to uninitialized data. This could lead to remote escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: WSAP00103831; Issue ID: WSAP00103831.

Published 2022-08-01 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.014 (71.6th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 72nd percentile — 71.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.014 · newest: 0.014 · change: +0.000

Affected products

Mediatek Mt2621
Mediatek Mt2625
Mediatek Nbiot Sdk — versions 2.8.1
Mediatek, Inc. Mt2621, Mt2625 — versions NBIOT SDK V2.8.1

Weakness classification (CWE)

CWE-908 — Use of Uninitialized Resource

References

corp.mediatek.com/product-security-bulletin/August-2022 (Vendor Advisory)

Frequently asked questions

What is CVE-2022-26437?: CVE-2022-26437 is a critical-severity vulnerability in Mediatek Mt2621, classified under Use of Uninitialized Resource. CVSS score: 9.8/10. Published 2022-08-01.
How severe is CVE-2022-26437?: Critical severity. CVSS v3 base score is 9.8 out of 10.