Vulnerability in ZTE Zxhn E8810
CVE-2020-6881
ZTE E8810/E8820/E8822 series routers have an MQTT DoS vulnerability, which is caused by the failure of the device to verify the validity of abnormal messages. A remote attacker could connect to the MQTT server and send an MQTT exception message to the specified device, which will cause the device to deny service. This affects:<ZXHN E8810, ZXHN E8820, ZXHN E8822><E8810 V1.0.26, E8810 V2.0.1, E8820 V1.1.3L, E8820 V2.0.13, E8822 V2.0.13>
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.006 (46.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 46th percentile — 46.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: +0.000
Affected products
- ZTE Zxhn E8810
- ZTE Zxhn E8810 Firmware — versions 1.0.26, 2.0.1
- ZTE Zxhn E8820
- ZTE Zxhn E8820 Firmware — versions 1.1.3, 2.0.13
- ZTE Zxhn E8822
- ZTE Zxhn E8822 Firmware — versions 2.0.13
- <zxhn E8810, Zxhn E8820, E8822> — versions <E8810 V1.0.26, E8810 V2.0.1, E8820 V1.1.3L, E8820 V2.0.13, E8822 V2.0.13>
Weakness classification (CWE)
References
- support.zte.com.cn/support/news/LoopholeInfoDetail.aspx (Vendor Advisory)
Frequently asked questions
- What is CVE-2020-6881?
- CVE-2020-6881 is a high-severity vulnerability in ZTE Zxhn E8810, classified under Origin Validation Error. CVSS score: 7.5/10. Published 2020-12-21.
- How severe is CVE-2020-6881?
- High severity. CVSS v3 base score is 7.5 out of 10.