Auth bypass in Franklinfueling Colibri Firmware

CVE-2022-44039

Franklin Fueling System FFS Colibri 1.9.22.8925 is affected by: File system overwrite. The impact is: File system rewrite (remote). ¶¶ An attacker can overwrite system files like [system.conf] and [passwd], this occurs because the insecure usage of "fopen" system function with the mode "wb" which allows overwriting file if exists. Overwriting files such as passwd, allows an attacker to escalate his privileges by planting backdoor user with root privilege or change root password.

Vulnerability class: Broken Access Control

Published · last modified .

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.010 (61.6th percentile), scored .

Low probability of exploitation in the next 30 days, but still tracked. 62nd percentile — 61.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2022-44039: held from 0.010 to 0.010.

EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: +0.000

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2022-44039?
CVE-2022-44039 is a critical-severity vulnerability in Franklinfueling Colibri Firmware, classified under Incorrect Authorization. CVSS score: 9.8/10. Published 2022-12-05.
How severe is CVE-2022-44039?
Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2022-44039 known to be exploited?
2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.