CVE-2025-49087

MEDIUMNVD 4.04.0—Trending — 3 sources updated this week

4.0

In Mbed TLS 3.6.1 through 3.6.3 before 3.6.4, a timing discrepancy in block cipher padding removal allows an attacker to recover the plaintext when PKCS#7 padding mode is used.

CVSS v3: 4.0
EG Score: 4.0(medium)
EPSS: 62.7%
KEV: Not listed

Published

July 20, 2025

Last Modified

August 7, 2025

References (2)

Weakness Classification(1)

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

CWE-385Covert Timing Channel

Data Freshness Timeline

(refreshed 11× in last 7d / 11× 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 01:43 UTCEG score recompute
2026-05-30 01:43 UTCGHSA enrichment
2026-05-29 13:44 UTCepss_batch

Frequently asked(5)

What is CVE-2025-49087?

CVE-2025-49087 is a medium vulnerability published on July 20, 2025. In Mbed TLS 3.6.1 through 3.6.3 before 3.6.4, a timing discrepancy in block cipher padding removal allows an attacker to recover the plaintext when PKCS#7 padding mode is used.

When was CVE-2025-49087 disclosed?

CVE-2025-49087 was first published in the National Vulnerability Database on July 20, 2025, with the most recent update on August 7, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2025-49087 actively exploited?

CVE-2025-49087 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 62.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2025-49087?

CVE-2025-49087 has a CVSS v3 base score of 4.0 (NVD).

How do I remediate CVE-2025-49087?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-49087, 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-2025-49087

📅 Published

🔄 Last Modified

🔗 References (2)