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CVE-2019-15849

23
FAUCET Score

CVE-2019-15849 describes a session fixation vulnerability in eQ-3 HomeMatic CCU3 firmware 3.41.11, allowing an attacker to pre-create session IDs and hijack a victim's authenticated session. This vulnerability carries a CVSS score of 7.3 (HIGH), indicating a network-based attack with low complexity, requiring user interaction, and leading to high confidentiality and integrity impacts, potentially enabling SSH access and system compromise. There is currently no public exploit code available, nor is there evidence of active exploitation or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
3.14.11CPE matchmatch criteria
cpe:2.3:o:eq-3:homematic_ccu3_firmware:3.14.11:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.3HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
2.1
Impact Score
5.2
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.82%
Probability of exploitation in next 30 days
EPSS Percentile
53.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0082 is in the 69th percentile among its peer group of 890 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

noskill1337.github.io / homematic-ccu3-session-fixation
ExploitMitigationThird Party Advisory
eq-3.com / products/homematic.html
Vendor Advisory