CVE-2023-21422

MEDIUMNVD 5.75.5▼

5.7

Improper authorization vulnerability in semAddPublicDnsAddr in WifiSevice prior to SMR Jan-2023 Release 1 allows attackers to set custom DNS server without permission via binding WifiService.

CVSS v3: 5.7
EG Score: 5.5(medium)
EPSS: 19.4%
KEV: Not listed

Published

February 9, 2023

Last Modified

November 21, 2024

References (2)

mobilehttps://security.samsungmobile.com/securityUpdate.smsb?year=2023&month=01
af854a3a-2127-422b-91ae-364da2661108https://security.samsungmobile.com/securityUpdate.smsb?year=2023&month=01

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 14× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-02 20:12 UTCepss_batch
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Frequently asked(5)

What is CVE-2023-21422?

CVE-2023-21422 is a medium vulnerability published on February 9, 2023. Improper authorization vulnerability in semAddPublicDnsAddr in WifiSevice prior to SMR Jan-2023 Release 1 allows attackers to set custom DNS server without permission via binding WifiService.

When was CVE-2023-21422 disclosed?

CVE-2023-21422 was first published in the National Vulnerability Database on February 9, 2023, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2023-21422 actively exploited?

CVE-2023-21422 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 19.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2023-21422?

CVE-2023-21422 has a CVSS v3 base score of 5.7 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 5.5.

How do I remediate CVE-2023-21422?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-21422, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2023-21422

📅 Published

🔄 Last Modified

🔗 References (2)

Weakness Classification(2)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2023-21422?

🔗 Related CVEs(same CWE)

Same CWE

Published

Last Modified

References (2)

Frequently asked(5)

Related CVEs(same CWE)