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Fencer Vulns
medium 6.5

CVE-2019-13954 json

Mikrotik RouterOS before 6.44.5 (long-term release tree) is vulnerable to memory exhaustion.

published 2019-07-26 7 y ago modified 2026-06-17 4 mo ago also EUVD-2019-5221

cvss
6.5
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
4.3%
EPSS 4.3% chance of exploitation in 30 days, percentile 91%
public exploits
0
none known

Summary

Mikrotik RouterOS before 6.44.5 (long-term release tree) is vulnerable to memory exhaustion. By sending a crafted HTTP request, an authenticated remote attacker can crash the HTTP server and in some circumstances reboot the system. Malicious code cannot be injected.

Patch / fix

  • mikrotik routeros 6.44.5

Exploit prediction

4.26% chance of exploitation in the next 30 days, higher than 91% of all scored CVEs (FIRST EPSS, 2026-11-08).

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 6.8 AV:N/AC:L/Au:S/C:N/I:N/A:C

Classification

Weakness
  • CWE-770 Allocation of Resources Without Limits or Throttling

References

Sources

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.