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CVE-2017-17251

18
FAUCET Score

CVE-2017-17251 describes a null pointer dereference vulnerability in the H.323 protocol affecting numerous Huawei AR series routers, security gateways, and video conferencing products across various versions. An unauthenticated, remote attacker can exploit this by sending specially crafted packets, leading to a process crash due to insufficient packet validation. The vulnerability has a CVSSv3 score of 5.3 (Medium), indicating it can be exploited over the network with low attack complexity and no user interaction, resulting in a denial of service (availability impact). Currently, there is no known active exploitation, and no public exploit code (Metasploit, Nuclei, ExploitDB) is available. Community discussion and media coverage for this CVE are minimal, suggesting low public awareness or interest.

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
1.25%
Probability of exploitation in next 30 days
EPSS Percentile
66.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0125 is in the 45th percentile among its peer group of 23,725 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-20171227-01-h323-en
Vendor Advisory