CVE-2026-33361 PUBLISHED

Meari weak XOR obfuscation

Assigner: runZero
Reserved: 19.03.2026 Published: 11.05.2026 Updated: 11.05.2026

In Meari IoT SDK image handling (libmrplayer.so) as observed in CloudEdge 5.5.0 (build 220), Arenti 1.8.1 (build 220), and related white-label apps (<= 1.8.x), baby monitor ".jpgx3" files use reversible XOR over only the first 1024 bytes with a predictable key derivation model.

Metrics

CVSS 3.1

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS Score: 7.5

Attack Vector	Network	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	High
Privileges Required	None	Integrity Impact	None
User Interaction	None	Availability Impact	None

CVSS 3.1

Product Status

Vendor	Meari
Product	com.meari.sdk
Versions	Default: unaffected Version firmID=8 is affected

Credits

Sammy Azdoufal finder
Tod Beardsley of runZero, Inc. coordinator

References

https://github.com/xn0tsa/nobody-puts-baby-in-a-corner
https://www.runzero.com/advisories/meari-weak-xor-obfuscation-cve-2026-33361/

Problem Types

CWE-326 Inadequate Encryption Strength CWE