Missing Authentication for Critical Function in SiRcom SMART Alert (SiSA)

published 2025-11-25 11 mo ago modified 2026-10-18 21 d ago also EUVD-2025-199621

cvss: 8.8; version 4.0, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.4%; EPSS 0.4% chance of exploitation in 30 days, percentile 30%
public exploits: 0; none known

SiRcom SMART Alert (SiSA) allows unauthorized access to backend APIs. This allows an unauthenticated attacker to bypass the login screen using browser developer tools, gaining access to restricted parts of the application.

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-25-329-06 updated 2025-11-25 cvss 9.1

SiRcom SMART Alert (SiSA)

SiRcom SMART Alert (SiSA) 3.0.48
affected: mitigation “SiRcom did not respond to CISA's request for coordination. Contact SiRcom using their contact page for more information.” sircom.org

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 11 mo ago (2025-11-25)

Exploit prediction

0.36% chance of exploitation in the next 30 days, higher than 30% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	4.0	8.8	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N
CNA	4.0	8.8	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Affected products

SiRcom SMART Alert (SiSA

Classification

Weakness

CWE-306 Missing Authentication for Critical Functionality

References

cisa.gov /news-events/ics-advisories/icsa-25-329-06
government-resource

Sources

CVE List CVE-2025-13483
NVD CVE-2025-13483

Fencer Vulns 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.

Summary