CVE-2025-49740

HIGHNVD 8.88.8—Trending — 4 sources updated this week

8.8

Protection mechanism failure in Windows SmartScreen allows an unauthorized attacker to bypass a security feature over a network.

CVSS v3: 8.8
EG Score: 8.8(medium)
EPSS: 76.6%
KEV: Not listed

Published

July 8, 2025

Last Modified

July 17, 2025

References (1)

secure@microsofthttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-49740

Weakness Classification(1)

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

CWE-693Protection Mechanism Failure

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Microsoft MSRCCVE-2025-497402025-07-08
Windows SmartScreen Security Feature Bypass Vulnerability

Data Freshness Timeline

(refreshed 12× in last 7d / 12× 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
2026-06-02 20:12 UTCepss_batch
2026-06-01 13:51 UTCepss_batch
2026-06-01 13:51 UTCepss_batch
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
2026-05-30 02:17 UTCEG score recompute
2026-05-30 02:17 UTCVendor advisory
2026-05-30 02:17 UTCGHSA enrichment
2026-05-29 13:44 UTCepss_batch

Frequently asked(5)

What is CVE-2025-49740?

CVE-2025-49740 is a high vulnerability published on July 8, 2025. Protection mechanism failure in Windows SmartScreen allows an unauthorized attacker to bypass a security feature over a network.

When was CVE-2025-49740 disclosed?

CVE-2025-49740 was first published in the National Vulnerability Database on July 8, 2025, with the most recent update on July 17, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2025-49740 actively exploited?

CVE-2025-49740 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 76.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2025-49740?

CVE-2025-49740 has a CVSS v3 base score of 8.8 (NVD).

How do I remediate CVE-2025-49740?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-49740, 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-2025-49740

Published

Last Modified

References (1)

Weakness Classification(1)

All Vendor Advisories

Data Freshness Timeline

Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2025-49740?

Same vendor

Same CWE

CVE-2025-49740

📅 Published

🔄 Last Modified

🔗 References (1)

Weakness Classification(1)

All Vendor Advisories

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2025-49740?

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References (1)

Frequently asked(5)

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