# CVE-2018-21230: Misconfiguration in n/a > Incorrect security settings in NETGEAR routers allow attackers to bypass security controls, requiring firmware updates to remediate. - **Severity:** Medium 5.2 (`CVSS:3.0/AC:L/AV:A/A:N/C:L/I:L/PR:N/S:C/UI:R`) - **Exploited in the wild:** Not known - **Login needed:** Not needed - **Attackable:** Local or same network only - **Victim action needed:** A user has to click or open something - **Fix available:** No - **Published:** 24 Apr 2020 - **Updated:** 5 Aug 2024 - **Also known as:** GHSA-wx9j-wrx5-q4xr ## What is CVE-2018-21230? CVE-2018-21230 is a medium-severity vulnerability in Netgear D6100 Firmware, published on 24 Apr 2020. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link. ### Official description Certain NETGEAR devices are affected by incorrect configuration of security settings. This affects D1500 before 1.0.0.27, D500 before 1.0.0.27, D6100 before 1.0.0.57, D6220 before 1.0.0.40, D6400 before 1.0.0.74, D7000 before 1.0.1.60, D7800 before 1.0.1.34, D8500 before 1.0.3.39, DGN2200v4 before 1.0.0.94, DGN2200Bv4 before 1.0.0.94, EX2700 before 1.0.1.42, EX3700 before 1.0.0.64, EX3800 before 1.0.0.64, EX6000 before 1.0.0.24, EX6100 before 1.0.2.18, EX6120 before 1.0.0.32, EX6130 before 1.0.0.22, EX6150 before 1.0.0.34_1.0.70, EX6200 before 1.0.3.82_1.1.117, EX6400 before 1.0.1.78, EX7000 before 1.0.0.56, EX7300 before 1.0.1., JNR1010v2 before 1.1.0.42, JR6150 before 1.0.1.10, JWNR2010v5 before 1.1.0.42, PR2000 before 1.0.0.22, R6050 before 1.0.1.10, R6100 before 1.0.1.16, R6220 before 1.1.0.50, R6250 before 1.0.4.14, R6300v2 before 1.0.4.12, R6400v2 before 1.0.2.34, R6700 before 1.0.1.26, R6900 before 1.0.1.26, R6900P before 1.2.0.22, R7000 before 1.0.9.6, R7000P before 1.2.0.22, R7100LG before 1.0.0.40, R7300DST before 1.0.0.54, R7500 before 1.0.0.110, R7500v2 before 1.0.3.26, R7800 before 1.0.2.44, R7900 before 1.0.1.26, R8000 before 1.0.3.48, R8300 before 1.0.2.104, R8500 before 1.0.2.104, R9000 before 1.0.3.10, WN2000RPTv3 before 1.0.1.26, WN2500RPv2 before 1.0.1.46, WN3000RPv3 before 1.0.2.66, WN3100RPv2 before 1.0.0.56, WNDR3400v3 before 1.0.1.14, WNDR3700v4 before 1.0.2.96, WNDR3700v5 before 1.1.0.54, WNDR4300 before 1.0.2.98, WNDR4300v2 before 1.0.0.48, WNDR4500v3 before 1.0.0.48, WNR1000v4 before 1.1.0.42, WNR2000v5 before 1.0.0.64, WNR2020 before 1.1.0.42, and WNR2050 before 1.1.0.42. ## Which versions are affected by CVE-2018-21230? It affects 58 products. Products: Netgear D1500 Firmware, Netgear D500 Firmware, Netgear D6100 Firmware, Netgear D6220 Firmware, Netgear D6400 Firmware, Netgear D7000 Firmware, Netgear D7800 Firmware, Netgear D8500 Firmware, Netgear Dgn2200 Firmware, Netgear Dgn2200b Firmware, Netgear Ex2700 Firmware, Netgear Ex3700 Firmware, Netgear Ex3800 Firmware, Netgear Ex6000 Firmware, Netgear Ex6100 Firmware, Netgear Ex6120 Firmware, Netgear Ex6130 Firmware, Netgear Ex6150 Firmware, Netgear Ex6200 Firmware, Netgear Ex6400 Firmware and 38 more. ## How do I fix CVE-2018-21230? No fix has been published for CVE-2018-21230 yet. Limit exposure of the affected software until one is available. ## Is CVE-2018-21230 being exploited? There is no known exploitation of CVE-2018-21230 in the wild and no public exploit code. ## Other vulnerabilities in Netgear D6100 Firmware - [CVE-2017-18703](https://insights.sbomify.com/CVE-2017-18703/): Cross-site request forgery in n/a (high 8.8) - [CVE-2017-18798](https://insights.sbomify.com/CVE-2017-18798/): Misconfiguration in n/a (high 8.4) - [CVE-2018-21139](https://insights.sbomify.com/CVE-2018-21139/): Information disclosure in n/a (high 7.1) - [CVE-2018-21231](https://insights.sbomify.com/CVE-2018-21231/): Misconfiguration in n/a (medium 5.2) ## Fix prompt for AI coding agents ```text Check this codebase for CVE-2018-21230 and fix it if it is affected. What it is: CVE-2018-21230 is a medium-severity vulnerability in Netgear D6100 Firmware, published on 24 Apr 2020. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link. Exploitation: There is no known exploitation of CVE-2018-21230 in the wild and no public exploit code. Affected product: Netgear D6100 Firmware. No package-level version data is available, so check the vendor advisory linked from the reference page. Task: 1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies. 2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it. 3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead. 4. Run the tests and summarise what changed and why. 5. If nothing in the project is affected, say so and change nothing. Reference: https://insights.sbomify.com/CVE-2018-21230/ (Markdown: https://insights.sbomify.com/CVE-2018-21230/index.md) ``` ## Sources - CVE record: https://www.cve.org/CVERecord?id=CVE-2018-21230 - NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-21230 - OSV: https://osv.dev/vulnerability/CVE-2018-21230 --- From sbomify Insights: https://insights.sbomify.com/CVE-2018-21230/ Summaries are generated and may contain mistakes; the official description above is the record.