CVE-2021-20677 is a denial-of-service vulnerability affecting several NEC UNIVERGE Aspire series PBX products, including the WX, UX, SV9100, and SL2100 models across various firmware versions. A remote, authenticated attacker can exploit this by sending a specially crafted command, leading to a system shutdown. The vulnerability has a CVSSv3.1 score of 3.1 (Low), indicating a network attack vector with high attack complexity and low impact, resulting only in availability loss. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 1.00, <= 3.51CPE matchmatch criteria | cpe:2.3:o:necplatforms:univerge_aspire_wx_firmware:*:*:*:*:*:*:*:* | ||
>= 1.00, <= 9.70CPE matchmatch criteria | cpe:2.3:o:necplatforms:univerge_aspire_ux_firmware:*:*:*:*:*:*:*:* | ||
>= 1.00, <= 10.70CPE matchmatch criteria | cpe:2.3:o:necplatforms:univerge_sv9100_firmware:*:*:*:*:*:*:*:* | ||
>= 1.00, <= 3.00CPE matchmatch criteria | cpe:2.3:o:necplatforms:sl2100_firmware:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub 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 records are not available for this CVE.