CVE-2023-51136Network attack vector

Unauthenticated memory corruption via reboot-schedule overflow

Published Dec 30, 2023 · Updated Aug 2, 2024

Stack overflow in formRebootSchedule in TOTOLINK X2000R Gh 1.0.0-B20230221.0948.web allows remote attackers to corrupt process memory. The overflow occurs in formRebootSchedule, but the public references do not disclose the triggering request field or the exact operation that writes beyond the stack buffer. The network path requires no privileges or user interaction; public evidence establishes memory corruption but does not demonstrate code execution or a specific service interruption.

CVSS severity9.8
Critical
EPSS probability0.64%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack overflow in formRebootSchedule in TOTOLINK X2000R Gh 1.0.0-B20230221.0948.web allows remote attackers to corrupt process memory. The overflow occurs in formRebootSchedule, but the public references do not disclose the triggering request field or the exact operation that writes beyond the stack buffer. The network path requires no privileges or user interaction; public evidence establishes memory corruption but does not demonstrate code execution or a specific service interruption.

The record

CVE
CVE-2023-51136
Published
Dec 30, 2023
Updated
Aug 2, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-787
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 30, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/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.

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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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write

Public exploit references

No public exploit references are available in this record.

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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