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CVE-2017-15331

17
FAUCET Score

CVE-2017-15331 describes an out-of-bounds read vulnerability in the H323 protocol affecting numerous Huawei AR series routers, Secospace USG firewalls, and other Huawei communication products. An unauthenticated, remote attacker can exploit this by sending specially crafted packets, leading to a process reboot due to insufficient packet verification. The vulnerability has a CVSSv3 score of 5.3 (Medium), indicating a low-complexity attack that requires no user interaction and results in a denial of service. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
v200r006c10CPE matchmatch criteria
cpe:2.3:o:huawei:ar120-s_firmware:v200r006c10:*:*:*:*:*:*:*
v200r007c00CPE matchmatch criteria
cpe:2.3:o:huawei:ar120-s_firmware:v200r007c00:*:*:*:*:*:*:*
v200r008c20CPE matchmatch criteria
cpe:2.3:o:huawei:ar120-s_firmware:v200r008c20:*:*:*:*:*:*:*
v200r008c30CPE matchmatch criteria
cpe:2.3:o:huawei:ar120-s_firmware:v200r008c30:*:*:*:*:*:*:*
v200r006c10CPE matchmatch criteria
cpe:2.3:o:huawei:ar1200_firmware:v200r006c10:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.3MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
LOW
Exploitability Score
3.9
Impact Score
1.4
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.48%
Probability of exploitation in next 30 days
EPSS Percentile
71.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0148 is in the 54th percentile among its peer group of 23,701 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 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-20171129-01-h323-en
Vendor Advisory