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Medium 6.5Published Oct 20, 2026
CVE-2026-12489An incorrect authorization vulnerability in the Data Access Layer (DAL) of Zyxel EX3501-T0 firmware versions through 5.44(ACHR.6)C0 could allow an authenticated attacker to escalate privileges by mod…
Updated under an hour ago ()
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It affects Zyxel EX3501-T0 firmware. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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An incorrect authorization vulnerability in the Data Access Layer (DAL) of Zyxel EX3501-T0 firmware versions through 5.44(ACHR.6)C0 could allow an authenticated attacker to escalate privileges by modifying the login_privilege data on an affected device.
- CVSS
- 6.5 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- Weakness (CWE)
- CWE-863
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Zyxel
- NVD analysis
- Deferred
- Record last updated
- Oct 21, 2026
- First seen by InfoSec Signals
- Oct 20, 2026
Affected products
Zyxel EX3501-T0 firmware zyxel:ex3501_t0_firmware (from the name) | through 5.44(ACHR.6)C0 | CNA record |
References
- https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-incorrect-authorization-vulnerability-in-the-dal-of-certain-5g-nr-cpe-dsl-ethernet-cpe-fiber-onts-and-wireless-extenders-10-20-2026vendor-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.