CVE-2020-1863

Name: CVE-2020-1863
Creator: NVD / NIST
Published: 2020-03-12T23:15:12.39+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 0.93%

Last modified Jun 17, 2026

CVE-2020-1863 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Huawei USG6000V with versions V500R001C20SPC300, V500R003C00SPC100, and V500R005C00SPC100 have an out-of-bounds read vulnerability. Due to a logical flaw in a JSON parsing routine, a remote, unauthenticated attacker could exploit this vulnerability to disrupt service in the affected products.. EPSS estimates a 0.93% chance of exploitation in the next 30 days.

Description

Huawei USG6000V with versions V500R001C20SPC300, V500R003C00SPC100, and V500R005C00SPC100 have an out-of-bounds read vulnerability. Due to a logical flaw in a JSON parsing routine, a remote, unauthenticated attacker could exploit this vulnerability to disrupt service in the affected products.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

0.93%

56.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-125

Affected Software

Vendor	Product	Versions
Huawei	Usg6000v Firmware	v500r001c20spc300
Huawei	Usg6000v Firmware	v500r003c00spc100
Huawei	Usg6000v Firmware	v500r005c00spc100

References

https://www.huawei.com/en/psirt/security-advisories/huawei-sa-20200311-01-buffer-enVendor Advisory
https://www.huawei.com/en/psirt/security-advisories/huawei-sa-20200311-01-buffer-enVendor Advisory

Timeline

Published: Mar 12, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-1863?

How severe is CVE-2020-1863?

CVE-2020-1863 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.93% probability of exploitation in the next 30 days.

How do I fix CVE-2020-1863?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-1863?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST