Security Resilience

CVE-2023-30280

Memory Safety in Netgear R6700 Firmware 1.0.0.26 … 1.0.4.128

Memory Safety
Published
26 April 2023
Modified
03 February 2025
Patch / advisory
View advisory
CVSS Score v3.1 9.8
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.012 68th percentile
Risk Priority 80 floored blend · peak EPSS

CVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.

Summary

CVE-2023-30280 is a critical-severity Classic Buffer Overflow (CWE-120) vulnerability in Netgear R6700 Firmware. Its CVSS base score is 9.8 (Critical).

Operationally, exploitation aligns with the MITRE ATT&CK technique NTDS (T1003.003); ranked in the top 32% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

Deeper analysis AI-assisted summary

Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.

CVE-2023-30280 is a buffer overflow vulnerability, tracked under CWE-120, that affects the fwSchedule.cgi page in Netgear R6900 version 1.0.2.26, R6700v3 version 1.0.4.128, and R6700 version 1.0.0.26. The flaw resides in handling of the getInputData parameter and carries a CVSS 3.1 score of 9.8.

A remote attacker can exploit the issue over the network without authentication or user interaction to execute arbitrary code or trigger a denial of service on the affected devices.

Public references point to Netgear’s security advisory pages, though no specific mitigation details such as patch availability or configuration guidance are provided in the source material.

The associated EPSS score rose from a low baseline to a peak of 0.0938 on 2026-03-24 before receding to its current value of 0.0446, indicating that exploitation interest emerged after disclosure.

EU & UK References

Vulnerability Data

Buffer Overflow vulnerability found in Netgear R6900 v.1.0.2.26, R6700v3 v.1.0.4.128, R6700 v.1.0.0.26 allows a remote attacker to execute arbitrary code and cause a denial ofservice via the getInputData parameter of the fwSchedule.cgi page.

CWE(s)
CWE-120

Related Threats

MITRE ATT&CK Enterprise Techniques

T1003.003 NTDS Credential Access
Adversaries may attempt to access or create a copy of the Active Directory domain database in order to steal credential information, as well as obtain other information about domain members such as devices, users, and access rights.
attack.mitre.org →
T1003.004 LSA Secrets Credential Access
Adversaries with SYSTEM access to a host may attempt to access Local Security Authority (LSA) secrets, which can contain a variety of different credential materials, such as credentials for service accounts.
attack.mitre.org →
T1003.006 DCSync Credential Access
Adversaries may attempt to access credentials and other sensitive information by abusing a Windows Domain Controller's application programming interface (API)(Citation: Microsoft DRSR Dec 2017) (Citation: Microsoft GetNCCChanges) (Citati…
attack.mitre.org →
T1003.008 /etc/passwd and /etc/shadow Credential Access
Adversaries may attempt to dump the contents of <code>/etc/passwd</code> and <code>/etc/shadow</code> to enable offline password cracking.
attack.mitre.org →
T1010 Application Window Discovery Discovery
Adversaries may attempt to get a listing of open application windows.
attack.mitre.org →
T1012 Query Registry Discovery
Adversaries may interact with the Windows Registry to gather information about the system, configuration, and installed software.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2024-52014Same vendor: Netgear
CVE-2023-38925Same vendor: Netgear
CVE-2024-51017Same vendor: Netgear
CVE-2024-51018Same vendor: Netgear
CVE-2024-51019Same vendor: Netgear
CVE-2024-51014Same vendor: Netgear
CVE-2024-51013Same vendor: Netgear
CVE-2024-51016Same vendor: Netgear
CVE-2023-27853Same vendor: Netgear
CVE-2024-52013Same vendor: Netgear

Affected Assets

netgear
r6900 firmware
1.0.2.26
netgear
r6700 firmware
1.0.0.26, 1.0.4.128

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)

—

Detect
Catch it (NIST detect / respond)

—

Harden
Shrink the surface (DISA STIG)

—

Validate
Prove the fix (OWASP ASVS)
  • V5.2.1

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

SC-27 Platform-independent Applications
addresses: CWE-120

Platform-independent managed code eliminates the need for unchecked native buffer copies that are the root cause of classic buffer overflows.

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

ID.RA-01 partial match
blocks

Vulnerability identification processes such as code review or scanning detect classic buffer overflows before exploitation.

PR.PS-02 partial match
blocks

Routine patching replaces vulnerable code containing unchecked buffer copies with corrected versions.

PR.PS-06 partial match
blocks

Secure development practices directly enforce bounds checking and input validation that prevent classic buffer overflows.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.5.14 Information transfer partial match
removes
A.5.15 Access control partial match
removes
A.5.16 Identity management partial match
removes
A.5.17 Authentication information partial match
removes
A.5.18 Access rights partial match
removes
A.8.10 Information deletion partial match
removes

References