HOMEVULNERABILITIESCVE-2019-12549
CRITICAL

CVE-2019-12549

CWE-798Published: June 17, 2019· Updated: Jun 17, 2026

9.8
CVSS v3.1

Official Description

WAGO 852-303 before FW06, 852-1305 before FW06, and 852-1505 before FW03 devices contain hardcoded private keys for the SSH daemon. The fingerprint of the SSH host key from the corresponding SSH daemon matches the embedded private key.

NVD Source

Technical Analysis

CVE-2019-12549 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

wago6 product(s)
852-303 firmware852-303852-1305 firmware852-1305852-1505 firmware852-1505
Source: NVD CPE · 6 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://cert.vde.com/en-us/advisories/vde-2019-013
ADVISORYhttps://ics-cert.us-cert.gov/advisories/ICSA-19-164-02
ADVISORYhttps://www.wago.com/us/
ADVISORYhttps://cert.vde.com/en-us/advisories/vde-2019-013
ADVISORYhttps://ics-cert.us-cert.gov/advisories/ICSA-19-164-02
ADVISORYhttps://www.wago.com/us/

All References (6)

→
https://cert.vde.com/en-us/advisories/vde-2019-013Third Party Advisory
→
https://ics-cert.us-cert.gov/advisories/ICSA-19-164-02Third Party Advisory · US Government Resource
→
https://www.wago.com/us/Vendor Advisory
→
https://cert.vde.com/en-us/advisories/vde-2019-013Third Party Advisory
→
https://ics-cert.us-cert.gov/advisories/ICSA-19-164-02Third Party Advisory · US Government Resource
→
https://www.wago.com/us/Vendor Advisory

Quick Facts

CVE IDCVE-2019-12549
CVSS Score9.8 / 10
SeverityCRITICAL
WeaknessCWE-798
CISA KEVNo
Affected1 vendor(s)
PublishedJun 17, 2019

Related CVEs (CWE-798)

CVE-2021-40519
10.0
CVE-2020-1614
10.0
CVE-2018-5560
10.0
CVE-2013-3542
10.0
CVE-2020-6963
10.0
CVE-2023-1748
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2019-12549 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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