How severe is CVE-2026-50099?

CVE-2026-50099 has a CVSS 3.x base score of 4.6, rated medium severity. It is exploitable over physical access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2026-50099 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (7th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-50099?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-50099 have an EU (EUVD) identifier?

Yes. CVE-2026-50099 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-36538.

When was CVE-2026-50099 published?

CVE-2026-50099 was published on 2026-06-12 and last updated on 2026-06-17.

CVE-2026-50099

CVE-2026-50099 is a medium-severity vulnerability with a CVSS 3.x base score of 4.6. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-538.

Key facts

Severity: Medium (CVSS 3.x base score 4.6)
CVSS v4: 5.1
EPSS exploit prediction: 0% (7th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-36538
Weakness: CWE-538
Published: 2026-06-12
Last modified: 2026-06-17

Description

During WiFi association, Naxclow device firmware prints the host network’s SSID, PSK, and negotiated WPA keys in cleartext to an exposed UART console on production hardware. The UART pads are labeled, run with default serial settings, and drop to an interactive RT-Thread shell that permits arbitrary memory reads, enabling full firmware extraction. An attacker with brief physical access, common for outdoor-mounted devices, can therefore recover WiFi credentials and bootstrap firmware-side attacks.

Frequently asked questions

What is CVE-2026-50099?: During WiFi association, Naxclow device firmware prints the host network’s SSID, PSK, and negotiated WPA keys in cleartext to an exposed UART console on production hardware. The UART pads are labeled, run with default serial settings, and drop to an interactive RT-Thread shell that permits arbitrary memory reads, enabling full firmware extraction. An attacker with brief physical access, common for outdoor-mounted devices, can therefore recover WiFi credentials and bootstrap firmware-side attacks.
How severe is CVE-2026-50099?: CVE-2026-50099 has a CVSS 3.x base score of 4.6, rated medium severity. It is exploitable over physical access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2026-50099 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (7th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-50099?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-50099 have an EU (EUVD) identifier?: Yes. CVE-2026-50099 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-36538.
When was CVE-2026-50099 published?: CVE-2026-50099 was published on 2026-06-12 and last updated on 2026-06-17.

References

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