CVE-2025-27909

MEDIUMNVD 5.45.4—Trending — 3 sources updated this week

5.4

IBM Concert Software 1.0.0 through 1.1.0 uses cross-origin resource sharing (CORS) which could allow an attacker to carry out privileged actions as the domain name is not being limited to only trusted domains.

CVSS v3: 5.4
EG Score: 5.4(medium)
EPSS: 12.4%
KEV: Not listed

Published

August 18, 2025

Last Modified

August 21, 2025

References (1)

psirt@ushttps://www.ibm.com/support/pages/node/7242354

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 10× in last 7d / 10× 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
2026-06-01 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 00:17 UTCEG score recompute
2026-05-30 00:17 UTCGHSA enrichment
2026-05-29 13:44 UTCepss_batch

Frequently asked(5)

What is CVE-2025-27909?

CVE-2025-27909 is a medium vulnerability published on August 18, 2025. IBM Concert Software 1.0.0 through 1.1.0 uses cross-origin resource sharing (CORS) which could allow an attacker to carry out privileged actions as the domain name is not being limited to only trusted domains.

When was CVE-2025-27909 disclosed?

CVE-2025-27909 was first published in the National Vulnerability Database on August 18, 2025, with the most recent update on August 21, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2025-27909 actively exploited?

CVE-2025-27909 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 12.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2025-27909?

CVE-2025-27909 has a CVSS v3 base score of 5.4 (NVD).

How do I remediate CVE-2025-27909?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-27909, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2025-27909

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CVE-2025-27909

📅 Published

🔄 Last Modified

🔗 References (1)

Weakness Classification(2)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2025-27909?

🔗 Related CVEs(same CWE)

Same CWE

Published

Last Modified

References (1)

Frequently asked(5)

Related CVEs(same CWE)