9.8

CVE-2021-31326: dlink dir-816_firmware Improper Authentication

CVSS: 9.8v3.1CriticalModified
Published 23-03-2022Last modified 03-08-2024
Open JSON

Vulnerability summary

CVE-2021-31326 is a critical (CVSS 9.8) Improper Authentication vulnerability in dlink dir-816_firmware. EPSS estimates a 2.20% chance of exploitation in the next 30 days, higher than 82.2% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.8/10
010
Critical · v3.1 (NVD)
EPSS score
2.20%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1github

Timeline

  1. 23-03-2022
    PublishedVulnerability first disclosed.
  2. 03-08-2024
    Last modifiedVulnerability information updated.

Description

D-Link DIR-816 A2 1.10 B05 allows unauthenticated attackers to arbitrarily reset the device via a crafted tokenid parameter to /goform/form2Reboot.cgi.

CVSS metrics

2 scores · 1 source · 2 versions

EPSS trend

Probability

2.20%

Chance of exploitation in the next 30 days

Percentile

82%

Versus all other CVEs

30-day change

0.00 pp

From 2.20% on 20-09-2026

20-09-202620-10-2026
EPSS score
2.20%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • githubUnverified

    Vuln

    Maturity: poc

Weaknesses

CWE · root cause

Affected systems

Dlink1 product

1 vendor · 1 product

References

3 links