AUGUST 4, 2026
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Case File

CVE-2025-8277

LOW · CVSS 3.1 EPSS 0.38%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2025-09-09 · Last synced 2026-08-04

CyberRota Analysis

This is a low severity vulnerability with a CVSS score of 3.1. It affects Exchange.

CVE
CVE-2025-8277
Severity
LOW
CVSS
3.1
EPSS
0.38%
Exchange

Original NVD Description

A flaw was found in libssh's handling of key exchange (KEX) processes when a client repeatedly sends incorrect KEX guesses. The library fails to free memory during these rekey operations, which can gradually exhaust system memory. This issue can lead to crashes on the client side, particularly when using libgcrypt, which impacts application stability and availability.