CVE-2018-3985 json
An exploitable double free vulnerability exists in the mdnscap binary of the CUJO Smart Firewall.
published 2019-03-21 7 y ago modified 2026-06-17 4 mo ago also EUVD-2018-15771
- cvss
- 8.3
- version 3.0, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.9%
- EPSS 1.9% chance of exploitation in 30 days, percentile 79%
- public exploits
- 0
- none known
Summary
An exploitable double free vulnerability exists in the mdnscap binary of the CUJO Smart Firewall. When parsing mDNS packets, a memory space is freed twice if an invalid query name is encountered, leading to arbitrary code execution in the context of the mdnscap process. An unauthenticated attacker can send an mDNS message to trigger this vulnerability.
Exploit prediction
1.86% chance of exploitation in the next 30 days, higher than 79% of all scored CVEs (FIRST EPSS, 2026-11-09).
Exploits and checks
- talosintelligence.com https://talosintelligence.com/vulnerability_reports/TALOS-2018-0653 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.0 | 8.3 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L |
| NVD | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P |
Affected products
- n/a CUJO
Classification
- Weakness
-
- CWE-415 Double Free
References
-
talosintelligence.com
/vulnerability_reports/TALOS-2018-0653
exploit, third-party-advisory
Sources
- CVE List CVE-2018-3985
- NVD CVE-2018-3985
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