CVE-2018-21153
No exploitation reported by the sources we read.
- Published2020-04-27
- Fixed in1.0.3.26 · 1.0.0.122
- WeaknessCWE-120
Am I affected?
Debian, Ubuntu or Red Hat sometimes backport a fix without changing the upstream version number: such a version reads « to verify », never « affected ».With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.
Description
Certain NETGEAR devices are affected by a buffer overflow by an unauthenticated attacker. This affects D7800 before 1.0.1.34, DM200 before 1.0.0.50, EX2700 before 1.0.1.32, EX6100v2 before 1.0.1.70, EX6150v2 before 1.0.1.70, EX6200v2 before 1.0.1.62, EX6400 before 1.0.1.78, EX7300 before 1.0.1.62, EX8000 before 1.0.0.114, R6100 before 1.0.1.22, R7500 before 1.0.0.122, R7500v2 before 1.0.3.26, R7800 before 1.0.2.40, R8900 before 1.0.3.10, R9000 before 1.0.3.10, WN2000RPTv3 before 1.0.1.26, WN3000RPv2 before 1.0.0.56, WN3000RPv3 before 1.0.2.66, WN3100RPv2 before 1.0.0.56, WNDR4300 before 1.0.2.98, WNDR4300v2 before 1.0.0.54, WNDR4500v3 before 1.0.0.54, and WNR2000v5 before 1.0.0.64.
Timeline
dates in UTC- 2020-04-2718:15CVE publishedNVD
Observed activity
isMalicious corpus · updated 2026-10-23 21:37 UTCBlock these indicators
- Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2018-21153?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2018-21153?format=csv
- TAXII collection of exploited CVEs
- The EDL and CSV take an API key on the Pro plan.
Versions per branch
NVD| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 1.0 | < 1.0.3.26 | 1.0.3.26 | NVD |
| 1.0 | < 1.0.0.122 | 1.0.0.122 | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 1.0 | < 1.0.2.66 | 1.0.2.66 | NVD |
| 1.0 | < 1.0.0.56 | 1.0.0.56 | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 1.0 | < 1.0.2.98 | 1.0.2.98 | NVD |
| 1.0 | < 1.0.0.54 | 1.0.0.54 | NVD |
17 more products in the sources.
as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.
Fix
- Update Netgear r7500 firmware to 1.0.3.26 · 1.0.0.122
Advisories and patches
- kb.netgear.comVendor Advisory
Detection
- Nuclei template
- none so far ProjectDiscovery
- Exploit-DB
- no entry Exploit-DB
- Proof-of-concept repositories
- none listed PoC-in-GitHub
Sources
- NVDCVSS 3.19.8read 2026-10-23
- CNACVSS 3.08.8read 2026-10-23
- NVDCVSS 2.07.5read 2026-10-23
- NVDweakness (CWE)CWE-120read 2026-10-23
- FIRST EPSSEPSS score1.6 %2026-10-23
Technical details
- CVSS v3 Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Published
- 2020-04-27
- Last Modified
- 2026-06-17
- NVD status
- Modified
Frequently asked questions
What is CVE-2018-21153?
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What is the CVSS score for CVE-2018-21153?
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Related vulnerabilities
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