CVE-2025-8693: zyxel ax7501-b0_firmware OS Command Injection
CVSS: 8.8v3.1HighAnalyzed
Published 18-11-2025Last modified 26-02-2026
Vulnerability summary
CVE-2025-8693 is a high (CVSS 8.8) OS Command Injection vulnerability in zyxel ax7501-b0_firmware. EPSS estimates a 1.05% chance of exploitation in the next 30 days, higher than 63.6% of scored vulnerabilities.
CVSS score
8.8/10
010
High · v3.1 (CVE.org)EPSS score
1.05%
0%100%
Low · -0.03 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 18-11-2025PublishedVulnerability first disclosed.
- 26-02-2026Last modifiedVulnerability information updated.
Description
A post-authentication command injection vulnerability in the "priv" parameter of Zyxel DX3300-T0 firmware version 5.50(ABVY.6.3)C0 and earlier could allow an authenticated attacker to execute operating system (OS) commands on an affected device.
CVSS metrics
2 scores · 2 sources · 1 versionHigh 8.8Preferred score · CVE.org (CNA)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HSourcesAll 2 agree
- NVDNIST8.8HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
1.05%
Chance of exploitation in the next 30 days
Percentile
64%
Versus all other CVEs
30-day change
-0.03 pp
From 1.07% on 20-09-2026
20-09-202620-10-2026
EPSS score1.05%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Zyxel55 products
- ax7501-b0_firmware≤ 5.17\(abpc.6.1\)c0
- ax7501-b1_firmware≤ 5.17\(abpc.6.1\)c0
- dm4200-b0_firmware≤ 5.17\(acbs.1.3\)c0
- dx3300-t0_firmware≤ 5.50\(abvy.6.3\)c0
- dx3300-t0 firmware≤ 5.50(ABVY.6.3)C0
1 vendor · 55 products
References
1 links- www.zyxel.com/global/…Vendor Advisory