7.5

CVE-2021-28842: trendnet tew-755ap_firmware NULL Pointer Dereference

CVSS: 7.5v3.1HighModified
Published 10-08-2021Last modified 03-08-2024
Open JSON

Vulnerability summary

CVE-2021-28842 is a high (CVSS 7.5) NULL Pointer Dereference vulnerability in trendnet tew-755ap_firmware. EPSS estimates a 0.96% chance of exploitation in the next 30 days, higher than 61.1% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (NVD)
EPSS score
0.96%
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. 10-08-2021
    PublishedVulnerability first disclosed.
  2. 03-08-2024
    Last modifiedVulnerability information updated.

Description

Null Pointer Deference vulnerability exists in TRENDnet TEW-755AP 1.11B03, TEW-755AP2KAC 1.11B03, TEW-821DAP2KAC 1.11B03, and TEW-825DAP 1.11B03, which could let a remote malicious user cause a denial os service by sending the POST request to apply_cgi via action do_graph_auth without login_name key.

CVSS metrics

2 scores · 1 source · 2 versions

EPSS trend

Probability

0.96%

Chance of exploitation in the next 30 days

Percentile

61%

Versus all other CVEs

30-day change

0.00 pp

From 0.96% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.96%

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

Trendnet4 products

1 vendor · 4 products

References

1 links