CVE-2018-1158 json
Mikrotik RouterOS before 6.42.7 and 6.40.9 is vulnerable to a stack exhaustion vulnerability.
published 2018-08-23 8 y ago modified 2026-06-17 4 mo ago also EUVD-2018-11796
- cvss
- 6.5
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 2.5%
- EPSS 2.5% chance of exploitation in 30 days, percentile 84%
- public exploits
- 0
- none known
Summary
Mikrotik RouterOS before 6.42.7 and 6.40.9 is vulnerable to a stack exhaustion vulnerability. An authenticated remote attacker can crash the HTTP server via recursive parsing of JSON.
Patch / fix
- mikrotik routeros 6.40.9, 6.42.7
Exploit prediction
2.48% chance of exploitation in the next 30 days, higher than 84% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- tenable.com https://www.tenable.com/security/research/tra-2018-21 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 6.5 | CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| NVD | 2.0 | 4.0 | AV:N/AC:L/Au:S/C:N/I:N/A:P |
Classification
- Weakness
-
- CWE-674 Uncontrolled Recursion
References
-
tenable.com
/security/research/tra-2018-21
exploit, third-party-advisory
-
mikrotik.com
/download/changelogs
vendor-advisory
-
mikrotik.com
/download/changelogs/bugfix-release-tree
vendor-advisory
-
seclists.org
/fulldisclosure/2019/Jul/20
mailing-list
Sources
- CVE List CVE-2018-1158
- NVD CVE-2018-1158
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.