CVE-2019-18989
CVE-2019-18989 is a medium-severity vulnerability in Mediatek Mt7620n Firmware with a CVSS 3.x base score of 5.4. 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-290.
Key facts
- Severity: Medium (CVSS 3.x base score 5.4)
- CVSS v2: 4.8
- EPSS exploit prediction: 1% (51st percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-290
- Affected product: Mediatek Mt7620n Firmware
- Published:
- Last modified:
Description
A partial authentication bypass vulnerability exists on Mediatek MT7620N 1.06 devices. The vulnerability allows sending an unencrypted data frame to a WPA2-protected WLAN router where the packet is routed through the network. If successful, a response is sent back as an encrypted frame, which would allow an attacker to discern information or potentially modify data.
Frequently asked questions
- What is CVE-2019-18989?
- A partial authentication bypass vulnerability exists on Mediatek MT7620N 1.06 devices. The vulnerability allows sending an unencrypted data frame to a WPA2-protected WLAN router where the packet is routed through the network. If successful, a response is sent back as an encrypted frame, which would allow an attacker to discern information or potentially modify data.
- How severe is CVE-2019-18989?
- CVE-2019-18989 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.
- Is CVE-2019-18989 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2019-18989?
- CVE-2019-18989 affects Mediatek Mt7620n Firmware. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2019-18989?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2019-18989 published?
- CVE-2019-18989 was published on 2020-09-30 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:o:mediatek:mt7620n_firmware:1.06:*:*:*:*:*:*:*
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