CVE-2019-3978 in the critical feed json
RouterOS versions 6.45.6 Stable, 6.44.5 Long-term, and below allow remote unauthenticated attackers to trigger DNS queries via port 8291.
published 2019-10-28 7 y ago modified 2026-06-17 4 mo ago also EUVD-2019-13585
- cvss
- 7.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 10.3%
- EPSS 10.3% chance of exploitation in 30 days, percentile 95%
- public exploits
- 1
- Exploit-DB
Summary
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
Timeline
- Published
- First public exploit (EDB-47566)
Exploit prediction
10.27% chance of exploitation in the next 30 days, higher than 95% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- EDB-47566 MikroTik RouterOS 6.45.6 - DNS Cache Poisoning remote, 2019-10-31
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:N/I:P/A:N |
Affected products
- n/a MikroTik RouterOS
Classification
- Weakness
-
- CWE-306 Missing Authentication for Critical Functionality
References
-
tenable.com
/security/research/tra-2019-46
third-party-advisory
-
packetstormsecurity.com
/files/155036/MikroTik-RouterOS-6.45.6-DNS-Cache-Poisoning.html
third-party-advisory
Sources
- CVE List CVE-2019-3978
- NVD CVE-2019-3978
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