CVE-2019-3978 EXPLOIT
7.5
HIGH · CVSS 3.1 · EPSS 10.3% (pctl 96)
Patch early
A public exploit exists.
Description
RouterOS versions 6.45.6 Stable, 6.44.5 Long-term, and below allow remote unauthenticated attackers to trigger DNS queries via port 8291. The queries are sent from the router to a server of the attacker's choice. The DNS responses are cached by the router, potentially resulting in cache poisoning
Scoring
| CVSS | 7.5 (HIGH, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
| EPSS | 10.27% — more likely to be exploited than 96% of all CVEs |
| Weakness | CWE-306 |
| On CISA KEV | no |
| Public exploit | yes |
| Published | 2019-10-29 |
| Last modified | 2026-06-17 |
Affected (1)
| Vendor | Product |
|---|---|
| mikrotik | routeros |
Public exploits
| Source | Title | Date |
|---|---|---|
| exploit-db | MikroTik RouterOS 6.45.6 - DNS Cache Poisoning | 2019-10-31 |
References
→ the Explorer · watch your stack · NVD