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CVE-2020-18329

24
FAUCET Score

CVE-2020-18329 describes an unauthenticated access vulnerability affecting Rehau devices utilizing specific versions of the Carel pCOWeb card (BIOS v6.27, BOOT v5.00, web v2.2). This flaw allows attackers to gain complete, unauthenticated access to the device's configuration and service interface. With a CVSS score of 7.5 (HIGH), the vulnerability is easily exploitable over the network with low attack complexity and no user interaction, potentially leading to full compromise of device confidentiality. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
2.2CPE matchmatch criteria
cpe:2.3:a:carel:pcoweb_card_web:2.2:*:*:*:*:*:*:*
6.27CPE matchmatch criteria
cpe:2.3:o:carel:pcoweb_card_bios:6.27:*:*:*:*:*:*:*
5.00CPE matchmatch criteria
cpe:2.3:o:carel:pcoweb_card_boot:5.00:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.93%
Probability of exploitation in next 30 days
EPSS Percentile
57.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0093 is in the 32nd percentile among its peer group of 51,485 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 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

github.com / cybertoxin/CVEs/blob/main/CVE_2020_18329.md
Third Party Advisory
medium.com / %40SergiuSechel/insecure-permissions-in-rehau-group-unlimited-polymer-solutions-implementation-of-carel-pcoweb-514c148ae694