9.8

CVE-2021-44971: tenda ac15_firmware Incorrect Comparison

CVSS: 9.8v3.1CriticalModified
Published 28-01-2022Last modified 09-07-2026
Open JSON

Vulnerability summary

CVE-2021-44971 is a critical (CVSS 9.8) Incorrect Comparison vulnerability in tenda ac15_firmware. EPSS estimates a 2.10% chance of exploitation in the next 30 days, higher than 81.5% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.8/10
010
Critical · v3.1 (NVD)
EPSS score
2.10%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 28-01-2022
    PublishedVulnerability first disclosed.
  2. 09-07-2026
    Last modifiedVulnerability information updated.

Description

Multiple Tenda devices are affected by authentication bypass, such as AC15V1.0 Firmware V15.03.05.20_multi?AC5V1.0 Firmware V15.03.06.48_multi and so on. an attacker can obtain sensitive information, and even combine it with authenticated command injection to implement RCE.

CVSS metrics

2 scores · 1 source · 2 versions

EPSS trend

Probability

2.10%

Chance of exploitation in the next 30 days

Percentile

82%

Versus all other CVEs

30-day change

0.00 pp

From 2.10% on 21-09-2026

21-09-202621-10-2026
EPSS score
2.10%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Tenda2 products

1 vendor · 2 products

References

1 links