Security readout for executives and security teams
Plain-English summary
CVE-2022-31937 is a critical memory corruption issue reported in Netgear N300 WNR2000v4 firmware V1.0.0.70. The CVSS score indicates a remote, unauthenticated attacker could cause full confidentiality, integrity, and availability impact. Treat exposed or unmanaged devices as high-risk until vendor guidance is checked.
Executive priority
Prioritize this for rapid inventory and containment because routers often sit at network boundaries and the CVSS vector requires no credentials or user interaction. If affected devices exist, isolate administration paths and follow Netgear guidance promptly.
Technical view
The CVE describes a stack overflow in uhttpd caused by unsafe strcpy use, mapped to CWE-787. The CVSS 3.1 vector is AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H, indicating network reachability, low complexity, no authentication, and no user interaction. Structured affected-product metadata is incomplete in the source bundle.
Likely exposure
Likely exposure is Netgear N300 WNR2000v4 routers running firmware V1.0.0.70, especially where router web services or administration surfaces are reachable from untrusted networks. The CVE record’s structured affected fields list n/a, so asset validation should rely on model and firmware inventory.
Exploitation context
The bundle does not show CISA KEV listing or any cited evidence of active exploitation. Public references include a CVE record, Netgear security and download pages, and a GitHub bug report. Do not assume exploitation in the wild without additional evidence.
Researcher notes
The available evidence is sparse: the CVE gives the vulnerable component and version, but no complete CPE list or confirmed fixed release. Validate against the original Netgear pages and the public bug report before making claims about broader WNR2000v4 firmware exposure.
Mitigation direction
- Identify WNR2000v4 devices and confirm firmware version.
- Check Netgear security and download pages for official guidance.
- Apply vendor-provided firmware updates if available.
- Disable external management access to affected routers.
- Restrict administration to trusted internal networks.
- Retire or replace unsupported affected devices.
Validation and detection
- Inventory routers by exact model and firmware version.
- Confirm whether V1.0.0.70 is present.
- Review firewall exposure for router management interfaces.
- Check Netgear pages for a fixed firmware or advisory.
- Monitor affected devices for crashes or unexpected reboots.
- Document exceptions where replacement is required.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-787: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2022-31937 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Critical
- CVSS
- 9.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H3.95.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
9.8CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://www.netgear.com/about/security/CVE reference · x_refsource_MISC
- https://www.netgear.com/support/download/?model=WNR2000v4CVE reference · x_refsource_MISC
- https://github.com/Davidteeri/Bug-Report/blob/main/netgear-n300-0x4297B4.mdCVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Out-of-bounds Write
Out-of-bounds Write represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.