CVE-2020-6989
9.8
CRITICAL · CVSS 3.1 · EPSS 3.5% (pctl 89)
In your normal cycle
Critical by CVSS (9.8), but no sign of active exploitation.
Description
In Moxa PT-7528 series firmware, Version 4.0 or lower, and PT-7828 series firmware, Version 3.9 or lower, a buffer overflow in the web server allows remote attackers to cause a denial-of-service condition or 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 | 3.5% — more likely to be exploited than 89% of all CVEs |
| Weakness | CWE-121 |
| On CISA KEV | no |
| Public exploit | none known |
| Published | 2020-03-24 |
| Last modified | 2026-06-17 |
Affected (40)
| Vendor | Product |
|---|---|
| moxa | pt-7528-12msc-12tx-4gsfp-hv |
| moxa | pt-7528-12msc-12tx-4gsfp-hv firmware |
| moxa | pt-7528-12msc-12tx-4gsfp-hv-hv |
| moxa | pt-7528-12msc-12tx-4gsfp-hv-hv firmware |
| moxa | pt-7528-12msc-12tx-4gsfp-wv |
| moxa | pt-7528-12msc-12tx-4gsfp-wv firmware |
| moxa | pt-7528-12msc-12tx-4gsfp-wv-wv |
| moxa | pt-7528-12msc-12tx-4gsfp-wv-wv firmware |
| moxa | pt-7528-12mst-12tx-4gsfp-hv |
| moxa | pt-7528-12mst-12tx-4gsfp-hv firmware |
| moxa | pt-7528-12mst-12tx-4gsfp-hv-hv |
| moxa | pt-7528-12mst-12tx-4gsfp-hv-hv firmware |
| moxa | pt-7528-12mst-12tx-4gsfp-wv |
| moxa | pt-7528-12mst-12tx-4gsfp-wv firmware |
| moxa | pt-7528-12mst-12tx-4gsfp-wv-wv |
| moxa | pt-7528-12mst-12tx-4gsfp-wv-wv firmware |
| moxa | pt-7528-16msc-8tx-4gsfp-hv |
| moxa | pt-7528-16msc-8tx-4gsfp-hv firmware |
| moxa | pt-7528-16msc-8tx-4gsfp-hv-hv |
| moxa | pt-7528-16msc-8tx-4gsfp-hv-hv firmware |
| moxa | pt-7528-16msc-8tx-4gsfp-wv |
| moxa | pt-7528-16msc-8tx-4gsfp-wv firmware |
| moxa | pt-7528-16msc-8tx-4gsfp-wv-wv |
| moxa | pt-7528-16msc-8tx-4gsfp-wv-wv firmware |
| moxa | pt-7528-16mst-8tx-4gsfp-hv |
| moxa | pt-7528-16mst-8tx-4gsfp-hv firmware |
| moxa | pt-7528-16mst-8tx-4gsfp-hv-hv |
| moxa | pt-7528-16mst-8tx-4gsfp-hv-hv firmware |
| moxa | pt-7528-16mst-8tx-4gsfp-wv |
| moxa | pt-7528-16mst-8tx-4gsfp-wv firmware |
| moxa | pt-7528-24tx-hv |
| moxa | pt-7528-24tx-hv firmware |
| moxa | pt-7528-24tx-hv-hv |
| moxa | pt-7528-24tx-hv-hv firmware |
| moxa | pt-7528-24tx-wv |
| moxa | pt-7528-24tx-wv firmware |
| moxa | pt-7528-24tx-wv-hv |
| moxa | pt-7528-24tx-wv-hv firmware |
| moxa | pt-7528-24tx-wv-wv |
| moxa | pt-7528-24tx-wv-wv firmware |
References
→ the Explorer · watch your stack · NVD