CVE Catalog

CVE-2026-15579

HighCVSS 8.8
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.44%

38th percentile - higher than 38% of all known CVEs

Summary

An out-of-bounds write vulnerability exists in some Ethernet switches because of improper validation of the username field length during Web login processing. This may allow a remote attacker to submit a specially crafted overly long input, triggering a buffer overflow that can cause the authentication process to crash and result in a Denial of Service (DoS) attack.

Risk Assessment

An attacker can remotely crash the authentication process, preventing access to the switch management interface. This may disrupt network management and monitoring.

Recommendation

Update the Ethernet switch firmware to a version containing the fix. Restrict access to the web management interface from untrusted networks.

Related vulnerabilities

Original NVD description (English source)

An out-of-bounds write vulnerability exists in some of the Ethernet switches because of improper validation of the username field length during Web login processing. This may allow a remote attacker to submit a specially crafted overly long input, triggering a buffer overflow that can cause the authentication process to crash and result in a Denial of Service (DoS) attack.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS