How severe is CVE-2018-20438?

CVE-2018-20438 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-2018-20438 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-20438?

CVE-2018-20438 affects Technicolor Tc7110.ar Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-20438?

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-2018-20438 published?

CVE-2018-20438 was published on 2018-12-25 and last updated on 2026-06-17.

CVE-2018-20438

CVE-2018-20438 is a critical-severity vulnerability in Technicolor Tc7110.ar 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-522.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 5.0
EPSS exploit prediction: 1% (69th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-522
Affected product: Technicolor Tc7110.ar Firmware
Published: 2018-12-25
Last modified: 2026-06-17

Description

Technicolor TC7110.AR STD3.38.03 devices allow remote attackers to discover Wi-Fi credentials via iso.3.6.1.4.1.2863.205.10.1.30.4.1.14.1.3.32 and iso.3.6.1.4.1.2863.205.10.1.30.4.2.4.1.2.32 SNMP requests.

Frequently asked questions

What is CVE-2018-20438?: Technicolor TC7110.AR STD3.38.03 devices allow remote attackers to discover Wi-Fi credentials via iso.3.6.1.4.1.2863.205.10.1.30.4.1.14.1.3.32 and iso.3.6.1.4.1.2863.205.10.1.30.4.2.4.1.2.32 SNMP requests.
How severe is CVE-2018-20438?: CVE-2018-20438 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-2018-20438 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-20438?: CVE-2018-20438 affects Technicolor Tc7110.ar Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-20438?: 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-2018-20438 published?: CVE-2018-20438 was published on 2018-12-25 and last updated on 2026-06-17.

References

https://misteralfa-hack.blogspot.com/2018/12/technicolor-passwords-wireless-via-snmp.html

Affected products (1)

cpe:2.3:o:technicolor:tc7110.ar_firmware:-:*:*:*:*:*:*:*

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