CVE-2026-3697Public exploitNetwork attack vector

Authenticated httpd crash via unbounded language path

Published Mar 8, 2026 · Updated Mar 8, 2026

Buffer overflow in PLANET ICG-2510 1.0_20250811 allows remote authenticated users to crash the web management interface. The sub_40C8E4 function in /usr/sbin/httpd passes the NVRAM language value to sprintf when building lang_pack/%s.js in a 60-byte heap buffer without a length check. An attacker must first alter the language configuration; later access to any management page invokes the function and terminates the web service.

CVSS severity6.3
Medium
EPSS probability0.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Buffer overflow in PLANET ICG-2510 1.0_20250811 allows remote authenticated users to crash the web management interface. The sub_40C8E4 function in /usr/sbin/httpd passes the NVRAM language value to sprintf when building lang_pack/%s.js in a 60-byte heap buffer without a length check. An attacker must first alter the language configuration; later access to any management page invokes the function and terminates the web service.

The record

CVE
CVE-2026-3697
Published
Mar 8, 2026
Updated
Mar 8, 2026
Vendor
PLANET Technology Corporation
Product
ICG-2510-LTE Series
Classifications
CWE-121, CWE-119, T1499
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 8, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 8, 2026Record 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_20250811

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

PLANET Technology Corporation · ICG-2510-LTE Seriesversion=1.0_20250811

Published CVSS scores

2.1VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
6.5VulDBAV:N/AC:L/Au:S/C:P/I:P/A:P
6.3VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

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.

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No observations available

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

Weakness, pattern, technique

CWE-121Stack-based Buffer Overflow
CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer
T1499Endpoint Denial of Service

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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