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CVE-2023-38823VulnerabilityPublished Updated

CVE-2023-38823: n/a

Source CVE Database V5

0

Not known to be exploited · CVSS 9.8 Critical.

Data as of 26 Oct 2026, 07:57 UTC

CVSS 3.1 base score
9.8Critical
How severe the flaw is on the 0–10 CVSS scale.
EPSS
1.2% chance of exploitation in 30 days – higher than 68% 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 20 Nov 2023

  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 2026-10-26.

What to do

Affected software

ProductAffectedFixed in
n/a n/aAffected
  • =1.0
  • =2.0
Fixed in–

AI-suggested

1. Immediate network segmentation: Isolate Tenda routers from critical internal networks to limit potential lateral movement if compromised. 2. Disable remote management interfaces on Tenda routers to reduce exposure to external attackers. 3. Monitor network traffic for unusual patterns or connections originating from or targeting Tenda devices. 4. Implement strict firewall rules to restrict inbound and outbound traffic to and from the router’s management interfaces. 5. Regularly check for firmware updates from Tenda and apply patches as soon as they become available. 6. Consider replacing vulnerable Tenda models with routers from vendors with a stronger security track record and active vulnerability management. 7. Employ network intrusion detection/prevention systems (IDS/IPS) that can detect exploitation attempts targeting HTTP daemon vulnerabilities. 8. Educate users and administrators about the risks associated with default or outdated router firmware and the importance of timely updates and configuration hardening.

Description

Buffer Overflow vulnerability in Tenda Ac19 v.1.0, AC18, AC9 v.1.0, AC6 v.2.0 and v.1.0 allows a remote attacker to execute arbitrary code via the formSetCfm function in bin/httpd.

References

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