CVSS 4.0
9.3 criticalCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:PCVE-2026-127277 Linksys EA8100 SMB Service service_smbd.sh initialization
Critical (9.3) in linksys ea8100. EPSS 0.6% estimated probability of exploitation activity in the next 30 days.
On this page
A security flaw has been discovered in Linksys EA8100 1.0.3.216940. The affected element is an unknown function of the file etc/init.d/service_smbd.sh of the component SMB Service. Performing a manipulation of the argument ANON_ACCESS results in improper initialization. The attack can be initiated remotely. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
Severity
CVSS 3.1
10.0 criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H- EPSS
- 0.6% estimated probability of exploitation activity in the next 30 days; 47th percentile. Scored 2026-11-13. A forecast for this CVE across the internet, not for your own systems.
- CWE
- CWE-665 Improper Initialization
- Published
- Modified
- Assigned by
- VulDB (CNA)
- NVD analysis
- Deferred: the NVD does not plan to analyze it
- Record from
- the NVD, synced
Ask an AI about this CVE
Show the prompt
Explain CVE-2026-127277 for an engineer deciding whether to act. Use https://cve.bz/api/public/cves/CVE-2026-127277?via=ask-ai-copy and https://cve.bz/cve/CVE-2026-127277?via=ask-ai-copy as the source of truth: what is affected and which versions fix it, whether it is in CISA KEV, public exploits, and its EPSS (an internet-wide 30-day estimate of exploitation activity, not a forecast for my systems). If they give no fixed versions, use the CVE record https://cveawg.mitre.org/api/cve/CVE-2026-127277 or the vendor advisory, not third-party mirrors. Tell me how to check whether I am affected and how to verify a fix. Cite the sources and say where they are uncertain.Opens a third-party assistant; its answer is its own, not cve.bz's. The prompt holds only this CVE's id and public links.
Badge for a README or a site
An image that stays current: it is drawn from the data each time it is fetched (a host that proxies images, as GitHub does, may show its copy for a while). Markdown:
[](https://cve.bz/cve/CVE-2026-127277)
HTML:
<a href="https://cve.bz/cve/CVE-2026-127277"><img src="https://cve.bz/cve/badge/CVE-2026-127277.svg" alt="CVE-2026-127277"></a>
Affected
Versions
From the CNA's record in the CVE List.
| Product | Affected |
|---|---|
| Linksys EA8100 | 1.0.3.216940 |
Attack patterns (CAPEC)
- CAPEC-26 Leveraging Race Conditions Likelihood: High · Severity: High
- CAPEC-29 Leveraging Time-of-Check and Time-of-Use (TOCTOU) Race Conditions Likelihood: High · Severity: High
The attack patterns MITRE's CAPEC relates to this record's weaknesses, as MITRE names them. Credits.
History
- Score 10.0 → 9.3 critical
- The NVD deferred its analysis
Changes since this site first stored the record. The same for every record: /api/public/changes.