How severe is CVE-2022-38556?

CVE-2022-38556 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2022-38556 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-38556?

CVE-2022-38556 affects Trendnet Tew733gr Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2022-38556?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2022-38556 published?

CVE-2022-38556 was published on 2022-08-28 and last updated on 2026-06-17.

CVE-2022-38556

CVE-2022-38556 is a critical-severity vulnerability in Trendnet Tew733gr Firmware with a CVSS 3.x base score of 9.8. 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-287.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (65th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Trendnet Tew733gr Firmware
Published: 2022-08-28
Last modified: 2026-06-17

Description

Trendnet TEW733GR v1.03B01 contains a Static Default Credential vulnerability in /etc/init0.d/S80telnetd.sh.

Frequently asked questions

What is CVE-2022-38556?: Trendnet TEW733GR v1.03B01 contains a Static Default Credential vulnerability in /etc/init0.d/S80telnetd.sh.
How severe is CVE-2022-38556?: CVE-2022-38556 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2022-38556 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-38556?: CVE-2022-38556 affects Trendnet Tew733gr Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2022-38556?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2022-38556 published?: CVE-2022-38556 was published on 2022-08-28 and last updated on 2026-06-17.

References

https://github.com/xxy1126/Vuln/tree/main/2

Affected products (1)

cpe:2.3:o:trendnet:tew733gr_firmware:1.03b01:*:*:*:*:*:*:*

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