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CVE-2021-20677

LOW
3.1
CVSS Score
Published: March 26, 2021 at 08:50 AM UTC
Updated: June 17, 2026 at 03:34 AM UTC
8 products affected across 1 vendorUniverge Aspire Wx FirmwareUniverge Aspire Ux FirmwareSL2100 Firmware

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Severity
LOW3.1
Exploit prediction
EPSS 1.0%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

SL2100 Firmware· Necplatforms
95%
1.00 ≤ v ≤ 3.00
necplatforms-sl2100 (same device)
Univerge Aspire Ux Firmware· Necplatforms
95%
1.00 ≤ v ≤ 9.70
necplatforms-univerge-aspire-ux (same device)
Univerge Aspire Wx Firmware· Necplatforms
95%
1.00 ≤ v ≤ 3.51
necplatforms-univerge-aspire-wx (same device)
Univerge SV9100 Firmware· Necplatforms
95%
1.00 ≤ v ≤ 10.70
necplatforms-univerge-sv9100 (same device)
SL2100· Necplatforms
60%
1.00 ≤ v ≤ 3.00
UNIVERGE Aspire UX· Necplatforms
60%
1.00 ≤ v ≤ 3.00
UNIVERGE Aspire WX· Necplatforms
60%
1.00 ≤ v ≤ 3.00
UNIVERGE SV9100· Necplatforms
60%
1.00 ≤ v ≤ 3.00

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (2)

x_refsource_MISCThird Party Advisory
Source: [email protected]
https://jvn.jp/en/jp/JVN12737530/index.html
x_refsource_MISCVendor Advisory
Source: [email protected]
https://www.necplatforms.co.jp/en/press/security_adv.html

CVSS

3.1LOW[email protected]
Attack Vector
NETWORK
Complexity
HIGH
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
LOW
Vector?

Quick Info

StatusMODIFIED
CWE
NVD-CWE-noinfo

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