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CVE-2026-21020

MediumPublished

Improper export of android application components in OmaCP prior to SMR May-2026 Release 1 allows local attackers to trigger privileged functions.

Published: May 13, 2026
Updated: May 13, 2026
Assigning CNA: SamsungMobile
Evidence observed: Aug 11, 2026

Primary CVSS

5.1/ 10Medium

nvd · CVSS 4.0

CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS probability estimate

0.1%

Low · next 30 days

Percentile: 0.7%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

Improper export of android application components in OmaCP prior to SMR May-2026 Release 1 allows local attackers to trigger privileged functions.

Sources

CVE-2026-21020-Protobuf-Message-Parsing-Polymorphic-Deserialization-VulnerabilityPoC
PoC for CVE-2026-21020, demonstrating Protobuf Any-type polymorphic deserialization where attacker-controlled type_url can lead to logic bugs, RCE, or privilege escalation.

Responsible use

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