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CVE-2018-17564

30
FAUCET Score

CVE-2018-17564 describes a critical vulnerability in Grandstream GXP16xx VoIP phones (version 1.0.4.128) where a specially crafted input string to the /cgi-bin/delete_CA endpoint can lead to the deletion of configuration parameters. This flaw allows unauthenticated attackers to gain administrative access to the device. With a CVSS score of 9.8 (Critical), it presents a severe risk due to its network-based attack vector, low attack complexity, and high impact on confidentiality, integrity, and availability. Despite its criticality, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
1.0.4.128CPE matchmatch criteria
cpe:2.3:o:grandstream:gxp1610_firmware:1.0.4.128:*:*:*:*:*:*:*
1.0.4.128CPE matchmatch criteria
cpe:2.3:o:grandstream:gxp1615_firmware:1.0.4.128:*:*:*:*:*:*:*
1.0.4.128CPE matchmatch criteria
cpe:2.3:o:grandstream:gxp1620_firmware:1.0.4.128:*:*:*:*:*:*:*
1.0.4.128CPE matchmatch criteria
cpe:2.3:o:grandstream:gxp1625_firmware:1.0.4.128:*:*:*:*:*:*:*
1.0.4.128CPE matchmatch criteria
cpe:2.3:o:grandstream:gxp1628_firmware:1.0.4.128:*:*:*:*:*:*:*

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
1.58%
Probability of exploitation in next 30 days
EPSS Percentile
73.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0158 is in the 60th percentile among its peer group of 36,897 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

grandstream.com / support/firmware
Vendor Advisory
iridiumxor.wordpress.com / 2019/01/03/three-simple-cves-for-a-good-voip-phone