Low severity3.1NVD Advisory· Published Mar 26, 2021· Updated Jun 17, 2026
CVE-2021-20677
CVE-2021-20677
Description
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
8- cpe:2.3:o:necplatforms:sl2100_firmware:*:*:*:*:*:*:*:*Range: >=1.00,<=3.00
- cpe:2.3:o:necplatforms:univerge_aspire_ux_firmware:*:*:*:*:*:*:*:*Range: >=1.00,<=9.70
- cpe:2.3:o:necplatforms:univerge_aspire_wx_firmware:*:*:*:*:*:*:*:*Range: >=1.00,<=3.51
- cpe:2.3:o:necplatforms:univerge_sv9100_firmware:*:*:*:*:*:*:*:*Range: >=1.00,<=10.70
- Range: 1.00 to 3.51
- Range: 1.00 to 10.70
- NEC Platforms, Ltd./UNIVERGE Aspire series PBXv5Range: 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
Patches
Vulnerability mechanics
References
2- jvn.jp/en/jp/JVN12737530/index.htmlnvdThird Party Advisory
- www.necplatforms.co.jp/en/press/security_adv.htmlnvdVendor Advisory
News mentions
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