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CVE-2016-8781

23
FAUCET Score

CVE-2016-8781 describes a denial-of-service vulnerability affecting Huawei Secospace USG6300, USG6500, and USG6600 series firewalls running specific V500R001C20 software versions. An authenticated remote attacker with specific permissions can exhaust device memory by issuing a large number of unspecified commands. This vulnerability has a CVSSv3 score of 6.5 (Medium), indicating a network-based attack with low complexity requiring low privileges, leading to high availability impact. There is no known public exploit code, active exploitation, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
v500r001c20CPE matchmatch criteria
cpe:2.3:o:huawei:secospace_usg6300_firmware:v500r001c20:*:*:*:*:*:*:*
v500r001c20spc200pweCPE matchmatch criteria
cpe:2.3:o:huawei:secospace_usg6300_firmware:v500r001c20spc200pwe:*:*:*:*:*:*:*
v500r001c20CPE matchmatch criteria
cpe:2.3:o:huawei:secospace_usg6500_firmware:v500r001c20:*:*:*:*:*:*:*
v500r001c20CPE matchmatch criteria
cpe:2.3:o:huawei:secospace_usg6600_firmware:v500r001c20:*:*:*:*:*:*:*
v500r001c20spc200pweCPE matchmatch criteria
cpe:2.3:o:huawei:secospace_usg6600_firmware:v500r001c20spc200pwe:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

6.5MEDIUM

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.25%
Probability of exploitation in next 30 days
EPSS Percentile
66.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0125 is in the 80th percentile among its peer group of 21,958 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 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-20161214-01-firewall-en
Vendor Advisory
securityfocus.com / bid/94927
Third Party AdvisoryVDB Entry