CVE-2021-32976
9.8
CRITICAL · CVSS 3.1 · EPSS 2.8% (pctl 86)
In your normal cycle
Critical by CVSS (9.8), but no sign of active exploitation.
Description
Five buffer overflows in the built-in web server in Moxa NPort IAW5000A-I/O series firmware version 2.2 or earlier may allow a remote attacker to initiate a denial-of-service attack and execute arbitrary code.
Scoring
| CVSS | 9.8 (CRITICAL, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 2.79% — more likely to be exploited than 86% of all CVEs |
| Weakness | CWE-121 |
| On CISA KEV | no |
| Public exploit | none known |
| Published | 2022-04-01 |
| Last modified | 2026-06-17 |
Affected (8)
| Vendor | Product |
|---|---|
| moxa | nport iaw5150a-12i\/o |
| moxa | nport iaw5150a-12i\/o firmware |
| moxa | nport iaw5150a-6i\/o |
| moxa | nport iaw5150a-6i\/o firmware |
| moxa | nport iaw5250a-12i\/o |
| moxa | nport iaw5250a-12i\/o firmware |
| moxa | nport iaw5250a-6i\/o |
| moxa | nport iaw5250a-6i\/o firmware |
References
- https://www.cisa.gov/uscert/ics/advisories/icsa-21-187-01
- https://www.moxa.com/en/support/product-support/security-advisory/nport-iaw5000a-io-serial-device-server-vulnerabilities
- https://www.cisa.gov/uscert/ics/advisories/icsa-21-187-01
- https://www.moxa.com/en/support/product-support/security-advisory/nport-iaw5000a-io-serial-device-server-vulnerabilities
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