Unspecified vulnerability in the Nortel CS 1000 M media card in Enterprise VoIP-Core-CS 1000E, 1000M, and 1000S 04.50W before 20070523 in Meridian/CS 1000 allows remote attackers to cause a denial of service (card hang) via unspecified vectors.
Conclusion & alert: CVE-2007-2886 is rated Moderate Risk (47.8/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.29%). Mandatory action: Review affected assets and schedule remediation.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-01-16 | 1.24% | 1.29% | +0.05% |
| 2 | 2025-08-14 | 1.26% | 1.24% | -0.01% |
| 3 | 2025-03-30 | — | 1.26% | — |
Full EPSS history (15 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 5.0 | 2.0 | MEDIUM |
|
10.0 | 2.9 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| nortel | communications_server | 1000e | cpe:2.3:a:nortel:communications_server:1000e:*:*:*:*:*:*:* |
| nortel | communications_server | 1000m | cpe:2.3:a:nortel:communications_server:1000m:*:cabinet_chassi:*:*:*:*:* |
| nortel | communications_server | 1000m | cpe:2.3:a:nortel:communications_server:1000m:*:half_group:*:*:*:*:* |
| nortel | communications_server | 1000m | cpe:2.3:a:nortel:communications_server:1000m:*:multi_group:*:*:*:*:* |
| nortel | communications_server | 1000m | cpe:2.3:a:nortel:communications_server:1000m:*:single_group:*:*:*:*:* |
| nortel | communications_server | 1000s | cpe:2.3:a:nortel:communications_server:1000s:*:*:*:*:*:*:* |