CVE-2020-25014

CRITICALImmediate

Published:Nov 27, 2020(5 years ago)

Modified:Dec 12, 2024

Remote ExploitNo Auth RequiredNo InteractionLow Complexity

Vulnerability Description

A stack-based buffer overflow in fbwifi_continue.cgi on Zyxel UTM and VPN series of gateways running firmware version V4.30 through to V4.55 allows remote unauthenticated attackers to execute arbitrary code via a crafted http packet.

Attack Characteristics

Network AccessLow ComplexityNo Auth NeededNo User Interaction

🤖

AI analysis not yet available

Plain-English explanation, risk summary, and remediation steps will appear here once AI analysis is complete.

No Fix Known

No patch has been released yet. Apply workarounds or mitigations where available.

Affected Software

178

Vendor	Product	Versions	Fixed In
zyxel	zld	4.30 - 4.55	-
zyxel	zld	4.30 - 4.55	-
zyxel	zld	4.30 - 4.55

Timeline

Published
CVE disclosed publicly
Nov 27, 20205 years ago
Last Modified
Most recent update
Dec 12, 20241 year ago
Indexed to CVEInsight
Added to this platform
Mar 29, 20262 months ago

References

https://businessforum.zyxel.com/categories/security-news-and-releaseRelease Notes
https://www.zyxel.com/support/Zyxel-security-advisory-for-buffer-overf...Vendor Advisory
https://businessforum.zyxel.com/categories/security-news-and-releaseRelease Notes

CVSS Score

v3.1

9.8/ 10.0

CRITICAL

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

At a Glance

178

Affected Products

References

zyxel / zld

CVE-2020-25014

Vulnerability Description

Attack Characteristics

Affected Software

Timeline

References

CVSS Score

At a Glance

Official Sources

CVSS v3 Vector

Impact Analysis

CVE-2020-25014

✦ Vulnerability Description

Attack Characteristics

Affected Software

Timeline

References

CVSS Score

At a Glance

Official Sources

CVSS v3 Vector

Impact Analysis

Vulnerability Description