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VulnerabilityPublished Updated

CVE-2024-50667: Trendnet TEW-820AP · Classic Buffer Overflow

Source CVE Database V5

0

Not known to be exploited · CVSS 9.8 Critical.

Data as of 26 Oct 2026, 17:16 UTC

CVSS 3.1 base score
9.8Critical
How severe the flaw is on the 0–10 CVSS scale.
EPSS
6.6% chance of exploitation in 30 days – higher than 93% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 11 Nov 2024

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

AI-suggested

  1. Immediate mitigation should focus on network-level controls: restrict access to the management interface of the Trendnet TEW-820AP devices to trusted IP addresses only, preferably via VPN or internal networks.
  2. Disable IPv6 functionality on the device if not required, as the vulnerability is related to IPv6 address processing.
  3. Monitor network traffic for unusual or malformed IPv6 packets targeting the vulnerable endpoints to detect potential exploitation attempts.
  4. Implement strict firewall rules to block unsolicited inbound traffic to the device's HTTP management ports from untrusted sources.
  5. Regularly check Trendnet's official channels for firmware updates or patches addressing this vulnerability and apply them promptly once available.
  6. Consider replacing or segmenting vulnerable devices in critical network zones until a patch is deployed.
  7. Conduct internal audits to inventory all affected devices and assess exposure levels.
  8. Employ intrusion detection/prevention systems (IDS/IPS) with signatures tuned to detect exploitation attempts of this specific stack overflow.

Description

The boa httpd of Trendnet TEW-820AP 1.01.B01 has a stack overflow vulnerability in /boafrm/formIPv6Addr, /boafrm/formIpv6Setup, /boafrm/formDnsv6. The reason is that the check of ipv6 address is not sufficient, which allows attackers to construct payloads for attacks.

References

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