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CVE-2016-4576

29
FAUCET Score

CVE-2016-4576 describes a critical buffer overflow vulnerability in the Application Specific Packet Filtering (ASPF) functionality of various Huawei security devices, including IPS, NGFW, and USG series. This flaw allows unauthenticated remote attackers to trigger a denial of service or execute arbitrary code by sending specially crafted packets, indicating a high impact on confidentiality, integrity, and availability. Despite its critical CVSS score of 9.8, there is currently no public exploit code available, nor is there evidence of active exploitation or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
v500r001c00CPE matchmatch criteria
cpe:2.3:o:huawei:nip6300_firmware:v500r001c00:*:*:*:*:*:*:*
v500r001c00CPE matchmatch criteria
cpe:2.3:o:huawei:secospace_usg6500_firmware:v500r001c00:*:*:*:*:*:*:*
v500r001c00CPE matchmatch criteria
cpe:2.3:o:huawei:secospace_antiddos8000_firmware:v500r001c00:*:*:*:*:*:*:*
v500r001c00CPE matchmatch criteria
cpe:2.3:o:huawei:usg9500_firmware:v500r001c00:*:*:*:*:*:*:*
v500r001c00CPE matchmatch criteria
cpe:2.3:o:huawei:secospace_usg6300_firmware:v500r001c00:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
2.38%
Probability of exploitation in next 30 days
EPSS Percentile
82.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0238 is in the 72nd percentile among its peer group of 36,829 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 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-20160511-01-aspf-en
Vendor Advisory
securityfocus.com / bid/90530