Auth bypass in Emerson Dixell Xweb-500
CVE-2021-45420
Emerson Dixell XWEB-500 products are affected by arbitrary file write vulnerability in /cgi-bin/logo_extra_upload.cgi, /cgi-bin/cal_save.cgi, and /cgi-bin/lo_utils.cgi. An attacker will be able to write any file on the target system without any kind of authentication mechanism, and this can lead to denial of service and potentially remote code execution. Note: the product has not been supported since 2018 and should be removed or replaced.
Vulnerability class: Information Disclosure
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: 0.175 (97.0th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 97th percentile — 97.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.190 · newest: 0.175 · change: -0.014
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- af854a3a-2127-422b-91ae-364da2661108 (Vendor Advisory)
- af854a3a-2127-422b-91ae-364da2661108 (Product)
- www.swascan.com/emerson (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-45420?
- CVE-2021-45420 is a critical-severity vulnerability in Emerson Dixell Xweb-500, classified under Information Disclosure. CVSS score: 9.8/10. Published 2022-02-14.
- How severe is CVE-2021-45420?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2021-45420 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.