CVE-2022-31798: Nortek Linear eMerge E3-Series 0.32-07p devices are vulnerable to /card_scan.php?CardFormatNo= XSS with sessio

Q: How do I fix CVE-2022-31798?

emerge e3 firmware: upgrade to newer than 0.32-07p. Exact commands for each OS are on this page.

Q: Is CVE-2022-31798 being exploited?

CVE-2022-31798 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2022-31798 affect?

CVE-2022-31798 affects emerge e3 firmware. Severity is medium (CVSS 6.1). Nortek Linear eMerge E3-Series 0.32-07p devices are vulnerable to /card_scan.php?CardFormatNo= XSS with session fixation (via PHPSESSID) when they are chained together. This would allow an attacker to take over an admin account or a user ac

Q: How urgent is CVE-2022-31798?

Priority 45/100. EPSS top 5%: very likely to be exploited

This week

MEDIUM 6.1UPGRADE

CVE-2022-31798 is a medium-severity flaw (CVSS 6.1) 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 0.32-07p devices are vulnerable to /card_scan.php?CardFormatNo= XSS with session fixation (via PHPSESSID) when they are chained together. This would allow an attacker to take over an admin account or a user account.

Why this priority

EPSS top 5%: very likely to be exploited

A fixed release or distro patch exists.

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	8.7% (top 5%)
CISA exploited list	No
Weakness	CWE-384
Published	2022-08-25
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: nortekcontrol

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2022-08-25 23:15 UTCPublished CVE record published
2026-06-17 04:46 UTCUpdated Record last modified

nortekcontrol emerge e3 firmware UPGRADE

Affected: <= 0.32-07p

Fixed in: newer than 0.32-07p

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Nuclei scan template: Nortek Linear eMerge E3-Series - Cross-Site Scripting

Verify at the official source NVD · CVE Program · Report a problem with this page
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-2022-31798?

emerge e3 firmware: upgrade to newer than 0.32-07p. Exact commands for each OS are on this page.

Is CVE-2022-31798 being exploited?

CVE-2022-31798 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-2022-31798 affect?

CVE-2022-31798 affects emerge e3 firmware. Severity is medium (CVSS 6.1). Nortek Linear eMerge E3-Series 0.32-07p devices are vulnerable to /card_scan.php?CardFormatNo= XSS with session fixation (via PHPSESSID) when they are chained together. This would allow an attacker to take over an admin account or a user ac

How urgent is CVE-2022-31798?

Priority 45/100. EPSS top 5%: very likely to be exploited

Software pages

PHP vulnerabilities

Related CVEs

CVE-2022-31499 CRITICAL 9.8 UPGRADE Nortek Linear eMerge E3-Series devices before 0.32-08f allow an unauthenticated attacker to inject OS commands
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

References

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