CVE•Published 2025-09-28•Modified 2026-10-09•1 article on news•6 live references•NVD data
CVE-2025-11091Tenda · Ac21_firmware
Vulnerability data via NVD (ingested)
CVSS v3.1
8.8
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS percentile
53
Exploit Prediction Scoring System · top 47% of all CVEs
Weaknesses (CWE)
Description
A security flaw has been discovered in Tenda AC21 up to 16.03.08.16. Affected by this vulnerability is the function sscanf of the file /goform/SetStaticRouteCfg. The manipulation of the argument list results in buffer overflow. The attack can be launched remotely. The exploit has been released to the public and may be exploited.
Timeline
Published 2025-09-28
Modified 2026-10-09
External references
Search for exposed instances
Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).
Shodan · vuln tag0 hosts
vuln:CVE-2025-11091Hosts Shodan has explicitly fingerprinted as vulnerable.
Shodan · OS
os:"Ac21 Firmware"Hosts Shodan identified as running Ac21 Firmware.
More intel sources (5)
Shodan report
vuln:CVE-2025-11091Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2025-11091Censys host search filtered to this CVE id.
grep.app
CVE-2025-11091Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2025-11091GitHub code search for direct mentions.
Google dork
"CVE-2025-11091" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub (3)
CVE-2025-110913 repos
speed47/spectre-meltdown-checkerShell
Reptar, Downfall, Zenbleed, ZombieLoad, RIDL, Fallout, Foreshadow, Spectre, Meltdown vulnerability/mitigation checker for Linux & BSD
dineshpinto/awesome-tee-blockchainunknown
A curated list of resources for learning about Trusted Execution Environments (TEEs) in the context of blockchains.
BetaHydri/SideChannelMitigationsPowerShell
Enterprise-grade PowerShell module for assessing and managing Windows side-channel vulnerability mitigations (Spectre, Meltdown, MDS, L1TF, and more).