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CVE-2019-13955

23
FAUCET Score

CVE-2019-13955 describes a stack exhaustion vulnerability in Mikrotik RouterOS versions prior to 6.44.5. An authenticated remote attacker can crash the HTTP server by sending a specially crafted HTTP request that triggers recursive JSON parsing. This vulnerability has a CVSS score of 6.5 (Medium), indicating a network-based attack with low complexity and requiring authentication, leading to high availability impact (denial of service) but no confidentiality or integrity impact. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 6.44.5CPE matchmatch criteria
cpe:2.3:o:mikrotik:routeros:*:*:*:*:*:*:*:*
6.45CPE matchmatch criteria
cpe:2.3:o:mikrotik:routeros:6.45:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

6.5MEDIUM

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
3.75%
Probability of exploitation in next 30 days
EPSS Percentile
88.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0375 is in the 97th percentile among its peer group of 21,977 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

packetstormsecurity.com / files/153733/Mikrotik-RouterOS-Resource-Stack-Exhaustion.html
Third Party AdvisoryVDB Entry
seclists.org / fulldisclosure/2019/Jul/20
Mailing ListThird Party Advisory