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CVE-2018-4841

32
FAUCET Score

CVE-2018-4841 describes a critical authentication bypass vulnerability affecting all versions of Siemens TIM 1531 IRC devices prior to V1.1. A remote attacker with network access to ports 80/tcp or 443/tcp can perform administrative operations without authentication. This allows for potential denial-of-service, data manipulation, and configuration changes, earning a CVSS v3.1 score of 9.8 (CRITICAL). While no public exploits or active exploitation are known, and there is minimal community discussion or media coverage, Siemens has provided mitigations for this high-impact vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.1CPE matchmatch criteria
cpe:2.3:o:siemens:tim_1531_irc_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
4.93%
Probability of exploitation in next 30 days
EPSS Percentile
91.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0493 is in the 85th percentile among its peer group of 36,835 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

cert-portal.siemens.com / productcert/pdf/ssa-110922.pdf
Vendor Advisory
securityfocus.com / bid/103576
Broken LinkThird Party AdvisoryVDB Entry