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VAR-202509-3862

Vulnerability from variot - Updated: 2025-10-15 23:46

A NULL pointer dereference in TOTOLINK N600R firmware v4.3.0cu.7866_B2022506 allows attackers to cause a Denial of Service. The TOTOLINK N600R is a dual-band wireless router released by the Korean brand TOTOLINK in 2013. It supports concurrent operation on the 2.4GHz and 5GHz bands and offers a maximum wireless transmission rate of 300Mbps

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CVE-2025-57623 (GCVE-0-2025-57623)

Vulnerability from cvelistv5 – Published: 2025-09-25 00:00 – Updated: 2025-09-26 20:02

Summary

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

Severity

5.3 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-09-26 20:01 UTC

CWE

n/a
CWE-476 - NULL Pointer Dereference

Assigner

mitre CNA under the mitre root

CNA scorecard E 27/100 over 2387 records in the last 180 days details

References

2 references

URL	Tags
https://github.com/z472421519/BinaryAudit/blob/ma…
https://gist.github.com/z472421519/d17061ea79a72d…

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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

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VAR-202509-3862

CVE-2025-57623 (GCVE-0-2025-57623)

Tags

Sightings

Nomenclature

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