CVE-2024-42658

Unauthorized management access via insecure session cookies

Published Aug 19, 2024 · Updated Aug 19, 2024

Information disclosure in Nepstech NTPL-XPON1GFEVN Firmware 1.0 allows remote attackers to obtain sensitive cookie data. The management interface insufficiently protects session cookies, allowing their interception or forgery and reuse for unauthorized access. Exploitation requires network reachability to the router management interface; the public record identifies no specific cookie field or request path.

CVSS severity9.8
Critical
EPSS probability1.38%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in Nepstech NTPL-XPON1GFEVN Firmware 1.0 allows remote attackers to obtain sensitive cookie data. The management interface insufficiently protects session cookies, allowing their interception or forgery and reuse for unauthorized access. Exploitation requires network reachability to the router management interface; the public record identifies no specific cookie field or request path.

The record

CVE
CVE-2024-42658
Published
Aug 19, 2024
Updated
Aug 19, 2024
Vendor
Nepstech
Product
NTPL-XPON1GFEVN Firmware
Classifications
CWE-200, T1550.004
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 19, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 19, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.0

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Nepstech · NTPL-XPON1GFEVN Firmwareversion=1.0

Published CVSS scores

9.8NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
8.8CISA-ADPCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-200Exposure of Sensitive Information to an Unauthorized Actor
T1550.004Use Alternate Authentication Material: Web Session Cookie

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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