Vulnerability Details : CVE-2021-20677
UNIVERGE Aspire series PBX (UNIVERGE Aspire WX from 1.00 to 3.51, UNIVERGE Aspire UX from 1.00 to 9.70, UNIVERGE SV9100 from 1.00 to 10.70, and SL2100 from 1.00 to 3.00) allows a remote authenticated attacker to cause system down and a denial of service (DoS) condition by sending a specially crafted command.
Vulnerability category: Denial of service
Exploit prediction scoring system (EPSS) score for CVE-2021-20677
Probability of exploitation activity in the next 30 days: 0.11%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 43 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2021-20677
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
|---|---|---|---|---|---|
|
3.5
|
LOW | AV:N/AC:M/Au:S/C:N/I:N/A:P |
6.8
|
2.9
|
NIST |
|
3.1
|
LOW | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L |
1.6
|
1.4
|
NIST |
References for CVE-2021-20677
-
https://jvn.jp/en/jp/JVN12737530/index.html
JVN#12737530: UNIVERGE Aspire series PBX vulnerable to denial-of-service (DoS)Third Party Advisory
-
https://www.necplatforms.co.jp/en/press/security_adv.html
Security Advisories | NEC Platforms, LtdVendor Advisory
Products affected by CVE-2021-20677
- Necplatforms » Univerge Aspire Wx FirmwareVersions from including (>=) 1.00 and up to, including, (<=) 3.51cpe:2.3:o:necplatforms:univerge_aspire_wx_firmware:*:*:*:*:*:*:*:*
- Necplatforms » Univerge Aspire Ux FirmwareVersions from including (>=) 1.00 and up to, including, (<=) 9.70cpe:2.3:o:necplatforms:univerge_aspire_ux_firmware:*:*:*:*:*:*:*:*
- Necplatforms » Univerge Sv9100 FirmwareVersions from including (>=) 1.00 and up to, including, (<=) 10.70cpe:2.3:o:necplatforms:univerge_sv9100_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:necplatforms:sl2100_firmware:*:*:*:*:*:*:*:*