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CVE-2020-1863

19
FAUCET Score

CVE-2020-1863 is an out-of-bounds read vulnerability affecting specific versions of Huawei USG6000V firewalls. A logical flaw in a JSON parsing routine allows a remote, unauthenticated attacker to disrupt service. This vulnerability has a CVSS score of 7.5 (High), indicating a network-based attack with low complexity and high availability impact. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
v500r001c20spc300CPE matchmatch criteria
cpe:2.3:o:huawei:usg6000v_firmware:v500r001c20spc300:*:*:*:*:*:*:*
v500r003c00spc100CPE matchmatch criteria
cpe:2.3:o:huawei:usg6000v_firmware:v500r003c00spc100:*:*:*:*:*:*:*
v500r005c00spc100CPE matchmatch criteria
cpe:2.3:o:huawei:usg6000v_firmware:v500r005c00spc100:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.93%
Probability of exploitation in next 30 days
EPSS Percentile
56.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0093 is in the 32nd percentile among its peer group of 51,551 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

huawei.com / en/psirt/security-advisories/huawei-sa-20200311-01-buffer-en
Vendor Advisory