CVE-2026-20977

MEDIUMNVD 5.55.5—Trending — 3 sources updated this week

5.5

Improper access control in Emergency Sharing prior to SMR Feb-2026 Release 1 allows local attackers to interrupt its functioning.

CVSS v3: 5.5
EG Score: 5.5(medium)
EPSS: 0.8%
KEV: Not listed

Published

February 4, 2026

Last Modified

February 5, 2026

References (1)

mobilehttps://security.samsungmobile.com/securityUpdate.smsb?year=2026&month=02

Data Freshness Timeline

(refreshed 9× in last 7d / 9× 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.

2026-05-31 22:30 UTCepss_batch
2026-05-31 22:30 UTCepss_batch
2026-05-31 00:16 UTCepss_batch
2026-05-31 00:16 UTCepss_batch
2026-05-31 00:16 UTCepss_batch
2026-05-29 14:41 UTCEG score recompute
2026-05-29 14:41 UTCGHSA enrichment
2026-05-29 13:44 UTCepss_batch
2026-05-29 13:44 UTCepss_batch

Frequently asked(5)

What is CVE-2026-20977?

CVE-2026-20977 is a medium vulnerability published on February 4, 2026. Improper access control in Emergency Sharing prior to SMR Feb-2026 Release 1 allows local attackers to interrupt its functioning.

When was CVE-2026-20977 disclosed?

CVE-2026-20977 was first published in the National Vulnerability Database on February 4, 2026, with the most recent update on February 5, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2026-20977 actively exploited?

CVE-2026-20977 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2026-20977?

CVE-2026-20977 has a CVSS v3 base score of 5.5 (NVD).

How do I remediate CVE-2026-20977?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-20977, 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-2026-20977

📅 Published

🔄 Last Modified

🔗 References (1)