PatchTheCVECVE-2019-20027: Aspire-derived NEC PBXes, including the SV8100, SV9100, SL1100 and SL2100 with software releases 7.0 or higher
CVE-2019-20027 is a critical-severity flaw (CVSS 9.8) affecting sv8100 firmware, sv9100 firmware, sl1100 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
Aspire-derived NEC PBXes, including the SV8100, SV9100, SL1100 and SL2100 with software releases 7.0 or higher contain the possibility if incorrectly configured to allow a blank username and password combination to be entered as a valid, successfully authenticating account.
Why this priority
- Critical severity
- 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 | 1.4% (top 28%) |
| CISA exploited list | No |
| Weakness | CWE-287 |
| Published | 2020-07-29 |
| 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-2019-20027?
sv8100 firmware: mitigate or apply the listed mitigation; sv9100 firmware: mitigate or apply the listed mitigation; sl1100 firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.
Is CVE-2019-20027 being exploited?
CVE-2019-20027 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-2019-20027 affect?
CVE-2019-20027 affects sv8100 firmware, sv9100 firmware, sl1100 firmware. Severity is critical (CVSS 9.8). Aspire-derived NEC PBXes, including the SV8100, SV9100, SL1100 and SL2100 with software releases 7.0 or higher contain the possibility if incorrectly configured to allow a blank username and password combination to be entered as a valid, su
How urgent is CVE-2019-20027?
Priority 57/100. Critical severity; Remotely exploitable, no login, no user action
Related CVEs
- CVE-2019-20033 CRITICAL 9.8 MITIGATE On Aspire-derived NEC PBXes, including all versions of SV8100 devices, a set of documented, static login crede
- CVE-2019-20032 MEDIUM 6.5 MITIGATE MITIGATE An attacker with access to an InMail voicemail box equipped with the find me/follow me feature on Aspire-deriv
- CVE-2019-20029 HIGH 8.8 MITIGATE MITIGATE An exploitable privilege escalation vulnerability exists in the WebPro functionality of Aspire-derived NEC PBX
- CVE-2019-20028 HIGH 7.5 MITIGATE MITIGATE Aspire-derived NEC PBXes operating InMail software, including all versions of SV8100, SV9100, SL1100 and SL210