CVE-2019-1683 json
Cisco SPA112, SPA525, and SPA5x5 Series IP Phones Certificate Validation Vulnerability
published 2019-02-25 7 y ago modified 2026-06-17 4 mo ago also EUVD-2019-10240
- cvss
- 6.5
- version 3.0, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.9%
- EPSS 0.9% chance of exploitation in 30 days, percentile 59%
- public exploits
- 0
- none known
Summary
A vulnerability in the certificate handling component of the Cisco SPA112, SPA525, and SPA5X5 Series IP Phones could allow an unauthenticated, remote attacker to listen to or control some aspects of a Transport Level Security (TLS)-encrypted Session Initiation Protocol (SIP) conversation. The vulnerability is due to the improper validation of server certificates. An attacker could exploit this vulnerability by crafting a malicious server certificate to present to the client. An exploit could allow an attacker to eavesdrop on TLS-encrypted traffic and potentially route or redirect calls initiated by an affected device. Affected software include version 7.6.2 of the Cisco Small Business SPA525 Series IP Phones and Cisco Small Business SPA5X5 Series IP Phones and version 1.4.2 of the Cisco Small Business SPA500 Series IP Phones and Cisco Small Business SPA112 Series IP Phones.
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 23 mo ago
Exploit prediction
0.87% chance of exploitation in the next 30 days, higher than 59% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.0 | 6.5 | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N |
| NVD | 3.1 | 7.4 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N |
| NVD | 2.0 | 5.8 | AV:N/AC:M/Au:N/C:P/I:P/A:N |
Affected products
- Cisco Cisco Small Business SPA500 Series IP Phones
- Cisco Cisco Small Business SPA112 Series IP Phones
- Cisco Cisco Small Business SPA525 Series IP Phones
- Cisco Cisco Small Business SPA5X5 Series IP Phones
Classification
- Weakness
-
- CWE-295 Improper Certificate Validation
References
-
tools.cisco.com
/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190220-ipphone-certs
vendor-advisory
-
securityfocus.com
/bid/107111
vdb-entry, broken-link, third-party-advisory
Sources
- CVE List CVE-2019-1683
- NVD CVE-2019-1683
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