CVE-2017-17974
BA SYSTEMS BAS Web on BAS920 devices (with Firmware 01.01.00*, HTTPserv 00002, and Script 02.*) and ISC2000 devices allows remote attackers to obtain sensitive information via a request for isc/get_sid_js.aspx or isc/get_sid.aspx, as demonstrated by…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.66%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
BA SYSTEMS BAS Web on BAS920 devices (with Firmware 01.01.00*, HTTPserv 00002, and Script 02.*) and ISC2000 devices allows remote attackers to obtain sensitive information via a request for isc/get_sid_js.aspx or isc/get_sid.aspx, as demonstrated by obtaining administrative access by subsequently using the credential information for the Supervisor/Administrator account.
- 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
- 1.66% probability · 77th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Affected
- basystems/bas920 firmware · basystems/isc2000 firmware
- Source
- cve@mitre.org
EPSS 1.7% 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://misteralfa-hack.blogspot.cl/2017/12/ba-system-improper-access-control.htmlExploit, Third Party Advisory
- https://github.com/ezelf/baCK_systemThird Party Advisory
- http://misteralfa-hack.blogspot.cl/2017/12/ba-system-improper-access-control.htmlExploit, Third Party Advisory
- https://github.com/ezelf/baCK_systemThird Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.