PatchTheCVECVE-2017-17974: BA SYSTEMS BAS Web on BAS920 devices (with Firmware 01.01.00*, HTTPserv 00002, and Script 02.*) and ISC2000 de
CVE-2017-17974 is a critical-severity flaw (CVSS 9.8) affecting bas920 firmware, isc2000 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
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.
Why this priority
- Critical severity
- Public exploit reference
- Remotely exploitable, no login, no user action
No fix is published yet: follow the downgrade or mitigation steps.
Risk facts
| CVSS score | 9.8 (Critical) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 1.7% (top 23%) |
| CISA exploited list | No |
| Published | 2017-12-29 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2017-17974?
bas920 firmware: mitigate or apply the listed mitigation; isc2000 firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.
Is CVE-2017-17974 being exploited?
CVE-2017-17974 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2017-17974 affect?
CVE-2017-17974 affects bas920 firmware, isc2000 firmware. Severity is critical (CVSS 9.8). 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 demons
How urgent is CVE-2017-17974?
Priority 63/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action