CVE•Published 2025-09-01•Modified 2026-09-26•1 article on news•6 live references•NVD data
CVE-2025-9791Tenda · Ac20_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
56
Exploit Prediction Scoring System · top 44% of all CVEs
Weaknesses (CWE)
Description
A weakness has been identified in Tenda AC20 16.03.08.05. This vulnerability affects unknown code of the file /goform/fromAdvSetMacMtuWan. This manipulation of the argument wanMTU causes stack-based buffer overflow. Remote exploitation of the attack is possible. The exploit has been made available to the public and could be exploited.
Timeline
Published 2025-09-01
Modified 2026-09-26
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-2025-9791Hosts Shodan has explicitly fingerprinted as vulnerable.
Shodan · OS
os:"Ac20 Firmware"Hosts Shodan identified as running Ac20 Firmware.
More intel sources (5)
Shodan report
vuln:CVE-2025-9791Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2025-9791Censys host search filtered to this CVE id.
grep.app
CVE-2025-9791Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2025-9791GitHub code search for direct mentions.
Google dork
"CVE-2025-9791" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub (4)
CVE-2025-97914 repos
googleprojectzero/fuzzilliSwift
A JavaScript Engine Fuzzer
Ostorlab/KEVunknown
Ostorlab KEV: One-command to detect most remotely known exploitable vulnerabilities. Sourced from CISA KEV, Google's Tsunami, Ostorlab's Asteroid and Bug Bounty programs.
SysAdminDoc/Astra-DeckJavaScript
Take back desktop YouTube with classic layouts, Theater Split, cleaner feeds, transcript tools, SponsorBlock, DeArrow, and private controls for Chrome, Firefox, or a userscript.
cosmos-bug-finder/Cosmos-PitfallsGo
A comprehensive security research study identifying common vulnerabilities and implementation issues across Cosmos ecosystem blockchain projects. This research identifies and docum…