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VulnerabilityPublished

CVE-2023-53948: cat03 Lilac-Reloaded · OS Command Injection

Affects cat03 Lilac-ReloadedSource CVE Database V5

0

Not known to be exploited · CVSS 9.3 Critical.

Data as of 26 Oct 2026, 14:05 UTC

CVSS 4.0 base score
9.3Critical
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.9% chance of exploitation in 30 days – higher than 60% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 19 Dec 2025

  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

Affected software

ProductAffectedFixed in
cat03 Lilac-ReloadedAffected
  • =0
Fixed in–

AI-suggested

To mitigate CVE-2023-53948, European organizations should immediately audit their use of Lilac-Reloaded with Nagios and disable the autodiscovery feature if not essential. Apply strict input validation and sanitization on the nmap_binary parameter to prevent command injection. If a patch or updated version from the vendor becomes available, prioritize its deployment. Network-level protections such as web application firewalls (WAFs) should be configured to detect and block suspicious POST requests targeting the autodiscovery endpoint. Employ network segmentation to isolate monitoring systems from critical infrastructure where possible. Monitor logs for unusual activity related to the autodiscovery feature and implement intrusion detection systems (IDS) to alert on potential exploitation attempts. Regularly review and update incident response plans to include scenarios involving monitoring system compromise. Finally, restrict access to Nagios and its plugins to trusted administrators and secure the management interfaces with strong authentication and encryption.

Description

Lilac-Reloaded for Nagios 2.0.8 contains a remote code execution vulnerability in the autodiscovery feature that allows attackers to inject arbitrary commands. Attackers can exploit the lack of input filtering in the nmap_binary parameter to execute a reverse shell by sending a crafted POST request to the autodiscovery endpoint.

References

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