AUGUST 4, 2026
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Case File

CVE-2021-4464

UNKNOWN · CVSS N/A EPSS 1.99%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2025-11-12 · Last synced 2026-08-04

CyberRota Analysis

This vulnerability has an unknown severity rating. See the original NVD description below for full technical details.

CVE
CVE-2021-4464
Severity
UNKNOWN
CVSS
N/A
EPSS
1.99%

Original NVD Description

FiberHome AN5506-04-FA firmware versions up to and including RP2631 and HG6245D prior to RP2602 contain a stack-based buffer overflow, as the HTTP service ('webs') fails to enforce maximum lengths for Cookie header values. When a cookie longer than 511 bytes is processed, a stack buffer is overrun, leading to a crash or potential control of execution flow.