CVE-2026-82539Disclosure

LOWCVSS 8.5 · HIGH

Signal is active with 1 mentions in latest observed window

Immediate actions

Patch affected systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

A vulnerability was determined in TOTOLINK A720R 4.1.5cu.630_B20250509. This impacts the function setMacFilterRules of the file cstecgi.cgi of the component MAC Filtering. Executing a manipulation of the argument desc can lead to memory corruption. The attack may be launched remotely. The exploit has been publicly disclosed and may be utilized.

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0.5/ 10 priority

Sources & remediation

Other references

Weakness type (CWE)

CWE-119

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

STABLE

Threat summary

Patch or workaround signal is available
2 mentions across 2 observed days
Momentum state: stable

What's happening

Patch or workaround mentioned in 1 signal
Technical details provided in 2 signals
Disclosure: 2 classified signals
Peaked 1d ago at 1 mentions (2026-08-30); latest day: 1
2 total mentions across 2 days

Deep dive

Activity timeline2 mentions / 2d

Signal classification1 categories

Disclosure

2100.0%

Referenced assets1 URL

By indicator

https://cybersecurity-news.de/totolink-sicherheitsluecken-cve-2026-82539-cve-2026-82616

Full discourse2 posts

Cybersecurity News DE@cybsecuritynews46d
Disclosure
#endpointsecurity Zwei kritische TOTOLINK-Lücken: Remote-Exploits in A720R und NR1800X #a720r #cstecgicgi #cve202682539 #cve202682616 #nr1800x #totolink https://cybersecurity-news.de/totolink-sicherheitsluecken-cve-2026-82539-cve-2026-82616
Post summary
Two critical TOTOLINK firmware vulnerabilities (CVE‑2026‑82539 and CVE‑2026‑82616) have been reported, potentially enabling remote exploitation on the A720R and NR1800X devices.
0000027
10 followersView on X
ADK Cyber@ADKCyber47d
Disclosure
CVE-2026-82539 (CVSS 9.1) impacts TOTOLINK A720R MAC filtering. Review firmware and restrict admin access. via NVD Recent High CVSS #CyberSecurity #InfoSec #Vulnerability https://t.co/l711qPFVwH
Post summary
A high‑severity vulnerability (CVE‑2026‑82539, CVSS 9.1) affecting TOTOLINK A720R MAC filtering is highlighted, with users urged to update firmware and limit admin access to mitigate risk.
0000045
95 followersView on X

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