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CVE-2018-7994

23
FAUCET Score

CVE-2018-7994 is a memory leak vulnerability affecting several Huawei products, including IPS Module, NGFW Module, NIP series, and Secospace/USG firewalls, specifically in their V500R001C50 and V500R002C10 versions. A remote unauthenticated attacker can exploit this by sending numerous Protal questionnaires, causing the device to run out of memory and reboot, leading to a denial of service. Rated with a CVSSv3 score of 7.5 (High), this vulnerability has a low attack complexity and no user interaction required. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
v500r001c50CPE matchmatch criteria
cpe:2.3:o:huawei:ips_module:v500r001c50:*:*:*:*:*:*:*
v500r001c50CPE matchmatch criteria
cpe:2.3:o:huawei:ngfw_module:v500r001c50:*:*:*:*:*:*:*
v500r002c10CPE matchmatch criteria
cpe:2.3:o:huawei:ngfw_module:v500r002c10:*:*:*:*:*:*:*
v500r001c50CPE matchmatch criteria
cpe:2.3:o:huawei:nip6300:v500r001c50:*:*:*:*:*:*:*
v500r001c50CPE matchmatch criteria
cpe:2.3:o:huawei:nip6600:v500r001c50:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

CVSS:3.0/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
3.0

Exploit Intelligence

EPSS Score
1.32%
Probability of exploitation in next 30 days
EPSS Percentile
67.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0132 is in the 48th percentile among its peer group of 51,485 CVEs.

Social Chatter

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-20180704-01-firewall-en
Vendor Advisory