5.3

CVE-2025-57623: totolink n600r_firmware NULL Pointer Dereference

CVSS: 5.3v3.1MediumAnalyzed
Published 25-09-2025Last modified 26-09-2025
Open JSON

Vulnerability summary

CVE-2025-57623 is a medium (CVSS 5.3) NULL Pointer Dereference vulnerability in totolink n600r_firmware. EPSS estimates a 0.39% chance of exploitation in the next 30 days, higher than 31.2% of scored vulnerabilities. 2 public exploits are recorded.

Overall risk
31/100
0100
Medium · default modelHow is this calculated?
CVSS score
5.3/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.39%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits2github

Timeline

  1. 25-09-2025
    PublishedVulnerability first disclosed.
  2. 26-09-2025
    Last modifiedVulnerability information updated.

Description

A NULL pointer dereference in TOTOLINK N600R firmware v4.3.0cu.7866_B2022506 allows attackers to cause a Denial of Service.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.39%

Chance of exploitation in the next 30 days

Percentile

31%

Versus all other CVEs

30-day change

0.00 pp

From 0.39% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.39%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

2 found
  • githubUnverified

    Binaryaudit

    Maturity: poc

  • githubUnverified

    D17061Ea79A72D39Fe69C000Fa1A6280

    Maturity: poc

Weaknesses

CWE · root cause

Affected systems

Totolink1 product

1 vendor · 1 product

References

2 links