CVE-2018-21163
CVE-2018-21163 is a high-severity vulnerability in Netgear Dgn2200b Firmware with a CVSS 3.x base score of 7.2. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-787.
Key facts
- Severity: High (CVSS 3.x base score 7.2)
- CVSS v2: 6.5
- EPSS exploit prediction: 1% (61st percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-787
- Affected product: Netgear Dgn2200b Firmware
- Published:
- Last modified:
Description
Certain NETGEAR devices are affected by a stack-based buffer overflow by an authenticated user. This affects DGN2200Bv4 before 1.0.0.102, DGN2200v4 before 1.0.0.102, EX3700 before 1.0.0.70, EX3800 before 1.0.0.70, EX6000 before 1.0.0.30, EX6100 before 1.0.2.22, EX6120 before 1.0.0.40, EX6130 before 1.0.0.22, EX6150 before 1.0.0.38, EX6200 before 1.0.3.86, EX7000 before 1.0.0.64, R6300v2 before 1.0.4.22, R6900P before 1.3.0.18, R7000P before 1.3.0.18, R7300DST before 1.0.0.62, R7900P before 1.3.0.10, R8000 before 1.0.4.12, R8000P before 1.3.0.10, WN2500RPv2 before 1.0.1.52, and WNDR3400v3 before 1.0.1.18.
Frequently asked questions
- What is CVE-2018-21163?
- Certain NETGEAR devices are affected by a stack-based buffer overflow by an authenticated user. This affects DGN2200Bv4 before 1.0.0.102, DGN2200v4 before 1.0.0.102, EX3700 before 1.0.0.70, EX3800 before 1.0.0.70, EX6000 before 1.0.0.30, EX6100 before 1.0.2.22, EX6120 before 1.0.0.40, EX6130 before 1.0.0.22, EX6150 before 1.0.0.38, EX6200 before 1.0.3.86, EX7000 before 1.0.0.64, R6300v2 before 1.0.4.22, R6900P before 1.3.0.18, R7000P before 1.3.0.18, R7300DST before 1.0.0.62, R7900P before 1.3.0.10, R8000 before 1.0.4.12, R8000P before 1.3.0.10, WN2500RPv2 before 1.0.1.52, and WNDR3400v3 before 1.0.1.18.
- How severe is CVE-2018-21163?
- CVE-2018-21163 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2018-21163 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2018-21163?
- CVE-2018-21163 primarily affects Netgear Dgn2200b Firmware. In total, 20 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2018-21163?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2018-21163 published?
- CVE-2018-21163 was published on 2020-04-23 and last updated on 2026-06-17.
References
Affected products (20)
- cpe:2.3:o:netgear:dgn2200b_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:netgear:dgn2200_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:netgear:ex3700_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:netgear:ex3800_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:netgear:ex6000_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:netgear:ex6100_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:netgear:ex6120_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:netgear:ex6130_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:netgear:ex6150_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:netgear:ex6200_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:netgear:ex7000_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:netgear:r6300_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:netgear:r6900p_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:netgear:r7000p_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:netgear:r7300dst_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:netgear:r7900p_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:netgear:r8000_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:netgear:r8000p_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:netgear:wn2500rp_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:netgear:wndr3400_firmware:*:*:*:*:*:*:*:*
More vulnerabilities in Netgear Dgn2200b Firmware
- CVE-2017-18756 — High (CVSS 8.8): Certain NETGEAR devices are affected by incorrect configuration of security settings. This affects D6220 before…
- CVE-2017-18777 — High (CVSS 7.8): Certain NETGEAR devices are affected by administrative password disclosure. This affects D6220 before V1.0.0.28, D6400…
- CVE-2016-11059 — High (CVSS 7.5): Certain NETGEAR devices are affected by password exposure. This affects AC1450 before 2017-01-06, C6300 before…
- CVE-2018-21139 — High (CVSS 7.5): Certain NETGEAR devices are affected by disclosure of sensitive information. This affects D1500 before 1.0.0.27, D500…
- CVE-2013-10060 — High (CVSS 7.2): An authenticated OS command injection vulnerability exists in Netgear routers (tested on the DGN2200B model) firmware…
- CVE-2018-21156 — High (CVSS 7.2): Certain NETGEAR devices are affected by a buffer overflow by an authenticated user. This affects D6220 before 1.0.0.38,…
All CVEs affecting Netgear Dgn2200b Firmware →
Other CWE-787 (Out-of-bounds Write) vulnerabilities
- CVE-2026-42369 — Critical (CVSS 10.0): GV-VMS V20 is a Video Monitoring Software used to gather the feeds of many surveillance cameras and manage other…
- CVE-2026-4746 — Critical (CVSS 10.0): Out-of-bounds Write vulnerability in timeplus-io proton (base/poco/Foundation/src modules). This vulnerability is…
- CVE-2025-43300 — Critical (CVSS 10.0): An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 15.8.5 and iPadOS…
- CVE-2025-24201 — Critical (CVSS 10.0): An out-of-bounds write issue was addressed with improved checks to prevent unauthorized actions. This issue is fixed in…
- CVE-2024-42479 — Critical (CVSS 10.0): llama.cpp provides LLM inference in C/C++. The unsafe `data` pointer member in the `rpc_tensor` structure can cause…
- CVE-2024-39791 — Critical (CVSS 10.0): Stack-based buffer overflow vulnerabilities affecting Vonets industrial wifi bridge relays and wifi bridge…