Is CVE-2026-21086 being actively exploited?

CVE-2026-21086 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2026-21086?

CVE-2026-21086 has a CVSS 3.1 base score of 7.8 (HIGH).

CVE-2026-21086

HIGH · CVSS 7.8EPSS 0.1%EU EUVD

Improper authorization in ProxyHandler prior to SMR Aug-2026 Release 1 allows local attackers to access proxy configuration.

Key facts

CVSS score: 7.8 (v3.1)
Severity: HIGH
CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-20
EPSS score: 0.1% (1th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2026-74627)
Published: September 9, 2026
NVD last modified: September 28, 2026
Status: Analyzed

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2026-74627 in the EU Vulnerability Database. Last updated in EUVD on September 10, 2026.

View on the EU Vulnerability Database

Affected products

samsung / android
samsung / android
samsung / android
samsung / android
samsung / android
samsung / android
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samsung / android
samsung / android
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samsung / android
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samsung / android
samsung / android
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samsung / android
samsung / android
samsung / android
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samsung / android
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samsung / android
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samsung / android
samsung / android
samsung / android
samsung / android

and 45 more…

Certified products that may be affected

6 FIPS 140 or Common Criteria certified products, from automated matching by sec-certs.org.

Samsung BoringCrypto Android 15 - Samsung Electronics Co., Ltd. - FIPS 140 5530 - active
Samsung BoringCrypto Android 14 - Samsung Electronics Co., Ltd. - FIPS 140 5521 - active
Samsung Electronics Co., Ltd. Samsung Galaxy Devices on Android 16 – Fall - Samsung Electronics Co., Ltd. - Common Criteria CCEVS-VR-VID-11664-2026 - active
Samsung Electronics Co., Ltd. Samsung Galaxy Devices on Android 15 – Spring - Samsung Electronics Co., Ltd. - Common Criteria CCEVS-VR-VID-11593-2025 - active
Samsung Galaxy Devices on Android 14 - Fall - Samsung Electronics Co., Ltd. - Common Criteria CCEVS-VR-VID-11539-2024 - active

See all 6 in the Security Certifications Explorer.

References

https://security.samsungmobile.com/securityUpdate.smsb?year=2026&month=09(Vendor Advisory)

Last updated September 30, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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