Security readout for executives and security teams
Plain-English summary
CVE-2019-20725 is a post-authentication stack overflow in specific NETGEAR routers and gateways. An attacker would need authenticated access, but successful exploitation could have severe confidentiality, integrity, and availability impact on the device. No provided source says this is being actively exploited.
Executive priority
Treat this as a moderate-priority infrastructure remediation item. It is not reported as actively exploited in the provided sources, but affected routers and gateways can be high-impact control points if an administrator account is compromised.
Technical view
The CVE describes a stack-based buffer overflow reachable by an authenticated user on listed NETGEAR D, R, WNDR, WNR, and XR models below specific firmware versions. CVSS 3.0 is 6.8 with adjacent-network attack vector, low complexity, high privileges required, no user interaction, and high C/I/A impact.
Likely exposure
Exposure is limited to organizations using the named NETGEAR devices on firmware older than the fixed versions. Risk is higher where administrative access is broadly shared, poorly controlled, or reachable from untrusted adjacent networks.
Exploitation context
The source bundle provides no KEV listing and no cited evidence of active exploitation. The vulnerability is not described as remotely unauthenticated; the CVSS vector requires adjacent network access and high privileges.
Researcher notes
Evidence is limited to the CVE record and NETGEAR advisory reference. The CVE does not provide CWE details, exploit procedure, or affected CPEs. Validate only by model, firmware version, administrative exposure, and vendor advisory status.
Mitigation direction
- Upgrade affected NETGEAR devices to the fixed firmware versions or later.
- Check the NETGEAR advisory for model-specific firmware guidance.
- Limit administrative access to trusted accounts only.
- Review administrator accounts and remove unnecessary access.
- Monitor vendor guidance for any updated remediation notes.
Validation and detection
- Inventory NETGEAR models listed in the CVE description.
- Compare each device firmware version against the fixed version thresholds.
- Confirm administrative access is restricted to authorized users.
- Verify remediation against the NETGEAR advisory after firmware updates.
- Document any device that cannot be upgraded promptly.
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.
CVE-2019-20725 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
- Medium
- CVSS
- 6.8 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AC:L/AV:A/A:H/C:H/I:H/PR:H/S:U/UI:N
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:3.0/AC:L/AV:A/A:H/C:H/I:H/PR:H/S:U/UI:N0.95.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
6.8MediumVector: CVSS:3.0/AC:L/AV:A/A:H/C:H/I:H/PR:H/S:U/UI:N
Source materials
- CVE List V5 sourceCVE List V5
- https://kb.netgear.com/000061203/Security-Advisory-for-Post-Authentication-Stack-Overflow-on-Some-Routers-and-Gateways-PSV-2018-0143CVE reference · x_refsource_CONFIRM
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.