SARA / Free Tools / CVE / CVE-2022-33256

CVE-2022-33256 — Memory corruption due to improper validation of array index in Multi-mode call p

Memory corruption due to improper validation of array index in Multi-mode call processor.

CVSS

9.8 CRITICAL

EPSS

0.12% (top 69.30%)

CWE

CWE-129

Published

2023-03-07T04:43:33.154Z

Last modified

2025-03-05T21:05:34.098Z

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

01What is this vulnerability?

Memory corruption due to improper validation of array index in Multi-mode call processor.

Vendor	Product	Versions
Qualcomm, Inc.	Snapdragon	AR8035, QCA6390, QCA6391, QCA6421, QCA6426, QCA6431, QCA6436, QCA6574A, QCA6574AU, QCA6595AU, QCA6696, QCA8081, QCA8337, QCM6490, QCN6024, QCN9024, QCS6490, QCX315, SA515M, SD 8 Gen1 5G, SD480, SD690 5G, SD695, SD750G, SD765, SD765G, SD768G, SD778G, SD780G, SD855, SD865 5G, SD870, SD888, SD888 5G, SDX55, SDX55M, SDX57M, SDX65, SDX70M, SDXR2 5G, SM7250P, SM7315, SM7325P, Snapdragon 4 Gen 1, WCD9341, WCD9360, WCD9370, WCD9375, WCD9380, WCD9385, WCN3988, WCN3991, WCN3998, WCN6740, WCN6750, WCN6850, WCN6851, WCN6855, WCN6856, WCN7850, WCN7851, WSA8810, WSA8815, WSA8830, WSA8835

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

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.

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

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

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

www.qualcomm.com — https://www.qualcomm.com/company/product-security/bulletins/march-2023-bulletin

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