MikroTik firmware 7.19.4 stores sensitive authentication credentials and network state in cleartext within non-volatile storage.

published 2026-09-16 last mo. modified 2026-10-14 26d ago also EUVD-2025-210924

cvss: 4.6; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.2%; EPSS 0.2% chance of exploitation in 30 days, percentile 4%
public exploits: 0; none known

MikroTik firmware 7.19.4 stores sensitive authentication credentials and network state in cleartext within non-volatile storage. An attacker with physical access to the device can extract this material from an SPI flash dump, without authenticating to the device and without knowledge of the administrative password.

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CISA SSVC

Exploitation: Proof of concept is public
Automatable: no
Technical impact: partial
Assessed: last mo. (2026-09-22)

Exploit prediction

0.15% chance of exploitation in the next 30 days, higher than 4% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

github.com https://github.com/RIFTI-Offensive-Security/security-advisories/blob/main/CVE-2025-56566.md referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CISA ADP	3.1	4.6	CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CNA	3.1	4.6	CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Classification

Weakness

CWE-312 Cleartext Storage of Sensitive Information

References

github.com /RIFTI-Offensive-Security/security-advisories/blob/main/CVE-2025-56566.md
exploit

Sources

CVE List CVE-2025-56566
NVD CVE-2025-56566

Fencer Intel 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.