CVE-2022-33211 — memory corruption in modem due to improper check while calculating size of seria

memory corruption in modem due to improper check while calculating size of serialized CoAP message

01What is this vulnerability?

memory corruption in modem due to improper check while calculating size of serialized CoAP message

02Affected products

Vendor	Product	Versions
Qualcomm, Inc.	Snapdragon	9205 LTE Modem, 9206 LTE Modem, 9207 LTE Modem, MDM8207, QCA4004, QTS110, Snapdragon 1100 Wearable Platform, Snapdragon 1200 Wearable Platform, Snapdragon Wear 1300 Platform, Snapdragon X5 LTE Modem, WCD9306, WCD9330

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: 2023-04-04T04:46:23.347Z
• Last modified: 2024-08-03T08:01:20.237Z

09References

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