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CVE-2018-18567

21
FAUCET Score

CVE-2018-18567 is a medium-severity vulnerability affecting AudioCodes 440HD and 450HD devices running firmware 3.1.2.89 and earlier. It allows man-in-the-middle attackers to steal sensitive credentials due to the devices' failure to validate X.509 certificates in on-premise Skype for Business deployments. The attack has high complexity but requires no user interaction, and its primary impact is high confidentiality compromise. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 3.1.2.89CPE matchmatch criteria
cpe:2.3:o:audiocodes:440hd_firmware:*:*:*:*:*:*:*:*
<= 3.1.2.89CPE matchmatch criteria
cpe:2.3:o:audiocodes:450hd_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.9MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
2.2
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.18%
Probability of exploitation in next 30 days
EPSS Percentile
64.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0118 is in the 29th percentile among its peer group of 19,955 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 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

seclists.org / bugtraq/2018/Oct/32
ExploitMailing ListThird Party Advisory
syss.de / fileadmin/dokumente/Publikationen/Advisories/SYSS-2018-026.txt
ExploitThird Party Advisory
securitytracker.com / id/1041956
Third Party AdvisoryVDB Entry