PatchTheCVECVE-2022-31499: Nortek Linear eMerge E3-Series devices before 0.32-08f allow an unauthenticated attacker to inject OS commands
CVE-2022-31499 is a critical-severity flaw (CVSS 9.8) affecting emerge e3 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
Nortek Linear eMerge E3-Series devices before 0.32-08f allow an unauthenticated attacker to inject OS commands via ReaderNo. NOTE: this issue exists because of an incomplete fix for CVE-2019-7256.
Why this priority
- Critical severity
- EPSS top 1%: very likely to be exploited
- Public exploit reference
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 9.8 (Critical) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 64.6% (top 1%) |
| CISA exploited list | No |
| Weakness | CWE-78 |
| Published | 2022-08-25 |
| 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
Exact fixes by distribution
Public exploits and detection
Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.
- GitHub PoC: omarhashem123/CVE-2022-31499 (1 stars)
- Write-up: eg.linkedin.com/in/omar-1-hashem
- Write-up: gist.github.com/omarhashem123/5f0c6f1394099b555740fdc5c7651ee2
- Nuclei scan template: Nortek Linear eMerge E3-Series <0.32-08f - Remote Command Injection
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-2022-31499?
emerge e3 firmware: upgrade to newer than 0.32-09c. Exact commands for each OS are on this page.
Is CVE-2022-31499 being exploited?
CVE-2022-31499 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-2022-31499 affect?
CVE-2022-31499 affects emerge e3 firmware. Severity is critical (CVSS 9.8). Nortek Linear eMerge E3-Series devices before 0.32-08f allow an unauthenticated attacker to inject OS commands via ReaderNo. NOTE: this issue exists because of an incomplete fix for CVE-2019-7256.
How urgent is CVE-2022-31499?
Priority 69/100. Critical severity; EPSS top 1%: very likely to be exploited; Public exploit reference; Remotely exploitable, no login, no user action
Related CVEs
- CVE-2022-31798 MEDIUM 6.1 UPGRADE Nortek Linear eMerge E3-Series 0.32-07p devices are vulnerable to /card_scan.php?CardFormatNo= XSS with sessio
- CVE-2022-31269 HIGH 8.2 UPGRADE Nortek Linear eMerge E3-Series devices through 0.32-09c place admin credentials in /test.txt that allow an att