CVE-2018-18568
Polycom VVX 500 and 601 devices 5.8.0.12848 and earlier allows man-in-the-middle attackers to obtain sensitive credential information by leveraging failure to validate X.509 certificates when used with an on-premise installation with Skype for Business.
Does this matter?
Lower severity and a low EPSS score (0.73%). Track it; it rarely justifies an emergency change on its own.
Description
Polycom VVX 500 and 601 devices 5.8.0.12848 and earlier allows man-in-the-middle attackers to obtain sensitive credential information by leveraging failure to validate X.509 certificates when used with an on-premise installation with Skype for Business.
- CVSS 3.1
- 5.9 MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
- EPSS
- 0.73% probability · 54th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-295
- Affected
- polycom/unified communications software · polycom/vvx 601 firmware · polycom/vvx 500 firmware
- Source
- cve@mitre.org
EPSS 0.7% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://seclists.org/bugtraq/2018/Oct/36Exploit, Mailing List, Third Party Advisory
- https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2018-027.txtExploit, Third Party Advisory
- https://seclists.org/bugtraq/2018/Oct/36Exploit, Mailing List, Third Party Advisory
- https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2018-027.txtExploit, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.