CVE-2026-108892
CRITICAL 10A vulnerability was determined in Linksys E1700 1.0.0.4.003. This vulnerability affects the function ssid1MACFilter of the file /goform/ssid1MACFilter of the component Mac Filter. This manipulation of the argument newap_text_%d causes stack-based buffer overflow. The attack may be initiated remotely. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure but did not respond in any way.
Severe if exploited (CVSS 10), but no known exploitation and low modeled probability. Patch on a normal cadence.
Exploitation likelihood
0.6%chance of exploitation in 30 days · 49th percentile
Impact if exploited
10CVSS 4.0 · CRITICAL
- ConfidentialityHigh
- IntegrityHigh
- AvailabilityHigh
What an attacker needs
- ✓Access: Reachable over the network — no local access needed
- ✓Privileges: No account or privileges required
- ✓User interaction: No user interaction needed
- ✓Complexity: No special conditions — reliably repeatable
- ✓Requirements: No special attack requirements
✓ lowers the bar for an attacker · ⚠ raises it
Proof of concept
No public PoC is currently catalogued.
Search for new PoCs
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Tracked sources are checked daily for recent CVEs, including PoCs published after the original disclosure. A later release appears after a tracked source lists it and a refresh succeeds.
Data snapshot:
Weakness (CWE)
- CWE-121: Stack-based Buffer Overflow
- CWE-119: Memory Corruption
CVSS vector
CVSS: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:P
References and research data (JSON)
All CVSS metrics
- CRITICAL 10 v4.0 · CNA Primary
CVSS: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:P - CRITICAL 10 v3.1 · CNA Primary
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R - CRITICAL 10 v3.0 · CNA Primary
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R - CRITICAL 10 v2.0 · CNA Primary
AV:N/AC:L/Au:N/C:C/I:C/A:C/E:POC/RL:ND/RC:UR - CRITICAL 9.3 v4.0 · NVD Secondary
CVSS: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: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 - CRITICAL 10 v3.1 · NVD Secondary
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H - HIGH 10 v2.0 · NVD Secondary
AV:N/AC:L/Au:N/C:C/I:C/A:C
References
Exploit-tagged references (not proof of a PoC)
- https://github.com/wudipjq/my_vuln/blob/main/Linksys3/vuln_66/66.md CVE record · VulDB · Updated 2026-10-12T13:30:16.430Z
NVD · CVE-2026-108892 · Updated 2026-10-15T16:17:39.040
Advisories
- https://vuldb.com/cve/CVE-2026-108892 CVE record · VulDB · Updated 2026-10-12T13:30:16.430Z
NVD · CVE-2026-108892 · Updated 2026-10-15T16:17:39.040 - https://vuldb.com/submit/973111 CVE record · VulDB · Updated 2026-10-12T13:30:16.430Z
NVD · CVE-2026-108892 · Updated 2026-10-15T16:17:39.040 - https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-97449 EUVD · EUVD-2026-97449
Technical & other
- https://vuldb.com/vuln/416684 CVE record · VulDB · Updated 2026-10-12T13:30:16.430Z
NVD · CVE-2026-108892 · Updated 2026-10-15T16:17:39.040 - https://vuldb.com/vuln/416684/cti CVE record · VulDB · Updated 2026-10-12T13:30:16.430Z
NVD · CVE-2026-108892 · Updated 2026-10-15T16:17:39.040 - https://www.linksys.com/ CVE record · VulDB · Updated 2026-10-12T13:30:16.430Z
NVD · CVE-2026-108892 · Updated 2026-10-15T16:17:39.040