CVE-2026-108893

Linksys E1700 setVlan stack-based overflow

CVSS score

9.4

EPSS probability

—

Risk score

0.9

Published

8 h ago

Overview Public Exploits (0)Newsroom Vulnerability Timeline

Patch status has not yet been verified

Resmî kaynaklarda yeterli kanıt bulunamadı. Bu sonuç “yama yok” anlamına gelmez.

Impact on My Inventory

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Vulnerability description

CVE AI research

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DayBreach AI Explanation

Verified against sources

Linksys E1700 setVlan Stack-Based Buffer Overflow Vulnerability

Sources read

Source agreement

Tam uyum

Evidence confidence

%55

Short explanation

A vulnerability has been identified in Linksys E1700 up to version 1.0.0.4.003 affecting the setVlan function (S0). This flaw allows attackers to launch remote exploitation (S0).

Why does it matter?

This critical-severity flaw enables remote attack vectors with high impact on confidentiality, integrity, and availability (S0).

What should be done?

Monitor vendor advisories for updates
Verify current firmware versions
Enforce strict network access controls

Chain of evidence and sources2 verified claims

Linksys E1700 sürüm 1.0.0.4.003 ve öncesi, setVlan fonksiyonunda yığını tabanlı tampon taşmasına açıktır.

S0 · daybreach-canonical S1 · cvelist

Saldırı uzaktan gerçekleştirilebilir ve halka açık bir istismar mevcuttur.

S0 · daybreach-canonical S1 · cvelist

Show the technical text from the sources

A vulnerability was identified in Linksys E1700 up to 1.0.0.4.003. This issue affects the function setVlan of the file /goform/setVlan. Such manipulation of the argument vlan_set leads to stack-based buffer overflow. The attack may be launched remotely. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way.

CVSS vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P

CWE: CWE-121, CWE-119

Explanation produced with the local gemini-flash-lite-latest model. Numerical metrics and the KEV, patch and exploit statuses are not determined by AI.

IMPACT: Affected Products and Software

Affected Products

The following products are affected by CVE-2026-108893 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.

ID	VENDOR	PRODUCT	ACTION
1	linksys	E1700	View

Total affected vendors: 1|Products: 1

RED HAT CSAF/VEX: Product Impact Check

Red Hat has not yet published a CSAF/VEX impact record for this CVE. This does not mean “not affected”.

SCORING: CVSS from Multiple Sources

CVSS Scores

The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.

SCORE	VERSION	SEVERITY	VECTOR	SOURCE
9.9	CVSS V3_1	CRITICAL	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R	CVE CNA
9.9	CVSS V3_0	CRITICAL	CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R	CVE CNA
9.9	CVSS V31	CRITICAL	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H	NVD
9.4	CVSS V4_0	CRITICAL	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P	CVE CNA
9.0	CVSS V2_0	—	AV:N/AC:L/Au:S/C:C/I:C/A:C/E:POC/RL:ND/RC:UR	CVE CNA
9.0	CVSS V2	—	AV:N/AC:L/Au:S/C:C/I:C/A:C	NVD
8.6	CVSS V40	HIGH	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X	NVD

Patch and Remediation Guide

Solution & Remediation Advisory

Patch status unknown

İncelenen resmî kaynaklarda yama durumu doğrulanamadı. Bu sonuç “yama yok” anlamına gelmez.

Confirm the affected product and version against the source evidence above.

Restrict access to internet-facing services and apply network segmentation.

Until a patch is confirmed, follow the vendor advisory; do not read an unknown status as “no patch”.

Monitor server logs and network endpoints for signs of anomalous execution.

Public exploit and active exploitation status

Verified exploit intelligence

No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.

Weakness Classification and Attack Patterns (CWE & CAPEC)

CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-108893 is associated with the following CWEs:

CWE-121: Common Weakness Enumeration Entry CWE-121 CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-108893 weaknesses.

CAPEC-66: SQL Injection CAPEC-126: Path Traversal CAPEC-28: OS Command Injection

Attack Vector and Accessibility

ExposureAğ üzerinden

PermissionsLow

UserGerekmiyor

Official Sources and Advisories

VDB-416685 | Linksys E1700 setVlan stack-based overflowvendor-advisory VDB-416685 | CTI Indicators (IOB, IOC, IOA)vendor-advisory CVE-2026-108893 | CVE Analysis and Reportvendor-advisory Submit #973112 | Linksys E1700 1.0.0.4.003 Stack-based Buffer Overflowvendor-advisory https://github.com/wudipjq/my_vuln/blob/main/Linksys3/vuln_67/67.mdvendor-advisory https://www.linksys.com/vendor-advisory

CVSS Vector Radar Chart

9.4 / 10

Vulnerability Scoring Details

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredLow privileges

User InteractionNone required

Confidentiality (Gizlilik)Low

Integrity (Bütünlük)None

Availability (Erişilebilirlik)High

Yama durumu bilinmiyor

İncelenen resmî kaynaklarda yama durumu doğrulanamadı. Bu sonuç “yama yok” anlamına gelmez.

Follow the vendor

linksys

Weakness Type (CWE & CAPEC)

CWE-121 CWE-119

Similar Vulnerabilities

10.0

CVE-2026-108892

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