CVE-2017-7909
The web interface uses JavaScript to check client authentication and redirect unauthorized users.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.62%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
A Use of Client-Side Authentication issue was discovered in Advantech B+B SmartWorx MESR901 firmware versions 1.5.2 and prior. The web interface uses JavaScript to check client authentication and redirect unauthorized users. Attackers may intercept requests and bypass authentication to access restricted web pages.
- CVSS 3.0
- 9.8 CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 2.62% probability · 85th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-603, CWE-287
- Affected
- advantech b\+b smartworx/mesr901 firmware
- Source
- ics-cert@hq.dhs.gov
EPSS 2.6% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://www.securityfocus.com/bid/98257Third Party Advisory, VDB Entry
- https://ics-cert.us-cert.gov/advisories/ICSA-17-122-03Third Party Advisory, US Government Resource
- http://www.securityfocus.com/bid/98257Third Party Advisory, VDB Entry
- https://ics-cert.us-cert.gov/advisories/ICSA-17-122-03Third Party Advisory, US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.