Security readout for executives and security teams
Plain-English summary
CVE-2009-5157 describes an authenticated command-injection flaw in Linksys WAG54G2 firmware 1.00.10. A logged-in administrator could abuse a ping-related setting to run unintended device commands. Business risk is highest where these legacy routers still manage network access or expose their admin interface.
Executive priority
Treat as a targeted legacy-infrastructure risk. Prioritize discovery and isolation first, then vendor-supported update or replacement planning if affected devices are found.
Technical view
The CVE states that setup.cgi on Linksys WAG54G2 1.00.10 mishandles shell metacharacters in the c4_ping_ipaddr variable, enabling authenticated command injection. The source bundle provides no CVSS score, CWE, vendor advisory, patch version, or public exploit-status confirmation.
Likely exposure
Exposure appears limited to Linksys WAG54G2 devices running firmware 1.00.10, especially where administrative access is reachable by untrusted users, shared credentials, or remote management.
Exploitation context
The CVE is not listed as KEV in the supplied bundle, and no cited source confirms active exploitation. Authentication is required, but compromise of admin credentials or exposed management access could make the flaw operationally serious.
Researcher notes
Evidence is sparse: the CVE description identifies the parameter and authenticated command-injection condition, but the bundle lacks scoring, patch data, and detailed affected CPEs. Avoid assuming broader Linksys exposure without additional vendor evidence.
Mitigation direction
- Inventory for Linksys WAG54G2 devices and firmware 1.00.10.
- Check Linksys or successor vendor guidance for supported firmware or retirement direction.
- Restrict router administration to trusted management networks only.
- Disable remote administration if it is not operationally required.
- Replace unsupported legacy devices when no maintained firmware is available.
Validation and detection
- Confirm whether any WAG54G2 devices remain in production or remote sites.
- Verify firmware version through approved administrative inventory methods.
- Review whether administrative interfaces are reachable from the Internet or user networks.
- Check access controls and credential rotation for router administration.
- Monitor device logs for unusual administrative activity, where logging is available.
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
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Execution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2009-5157 mapping review
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Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
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 and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://www.securityfocus.com/bid/35142CVE reference · x_refsource_MISC
- https://www.securityfocus.com/archive/1/503934CVE 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.