Stack-based buffer overflow in Windows Telephony Service allows an unauthorized attacker to execute code over a network.
CVE-2025-27481
HIGHNVD 8.88.8—
EchelonGraph scoreMEDIUM confidence
Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2025-04-08. NVD baseline CVSS 8.8; sources differ by 0.0.
Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
- High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 8.8Exploit: None knownExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 8.8
- EG Score
- 8.8(medium)
- EG Risk
- 40(Track)EG Risk 40/100SSVC: Track
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity88% × 45%Exploitation1% × 40%Automatability0% × 15%Action: Routine — remediate on your standard cadence. - EPSS PROB
- 1%
- EPSS %ILE
- 67%
- KEV
- Not listed
Published
April 8, 2025
Last Modified
August 10, 2026
References (1)
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Frequently asked(5)
What is CVE-2025-27481?
CVE-2025-27481 is a high vulnerability published on April 8, 2025. Stack-based buffer overflow in Windows Telephony Service allows an unauthorized attacker to execute code over a network.
When was CVE-2025-27481 disclosed?
CVE-2025-27481 was first published in the National Vulnerability Database on April 8, 2025, with the most recent update on August 10, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-27481 actively exploited?
CVE-2025-27481 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 33.1% of all scored CVEs.
What is the CVSS score of CVE-2025-27481?
CVE-2025-27481 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2025-27481?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-27481, 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
Explore the affected products and dependency analysis for CVE-2025-27481
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