CVE-2023-43505
No exploitation reported by the sources we read.
- Published2023-11-14
- WeaknessCWE-284
Am I affected?
Debian, Ubuntu or Red Hat sometimes backport a fix without changing the upstream version number: such a version reads « to verify », never « affected ».With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.
Description
A vulnerability has been identified in COMOS (All versions). The affected application lacks proper access controls in SMB shares. This could allow an attacker to access files that the user should not have access to.
Timeline
dates in UTC- 2023-11-1411:15CVE publishedNVD
Observed activity
isMalicious corpus · updated 2026-10-23 18:48 UTCBlock these indicators
- Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2023-43505?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2023-43505?format=csv
- TAXII collection of exploited CVEs
- The EDL and CSV take an API key on the Pro plan.
Versions per branch
NVD| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| — | all versions | no fix published | NVD |
as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.
Distribution builds and vendor advisories
Packages from OSV.dev and products from the vendors' CSAF advisories.
version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.
Vendor advisories
Siemens COMOS
COMOS
Fix
- Mitigation from the vendor CISA ICSA-23-320-09 · 1 productEnsure all files imported into COMOS originate from a trusted source and transmitted are over secure channels
- Mitigation from the vendor CISA ICSA-23-320-09 · 1 productCVE-2023-43505, CVE-2023-46601: Use an application server like Citrix which builds an additional layer of access control around COMOS. The file share with the documents folder and the database should be only accessible by the application server. You can find further recommendations in the COMOS man…
- No fix planned, says the vendor CISA ICSA-23-320-09 · 1 productCurrently no fix is planned
Advisories and patches
- cert-portal.siemens.comVendor Advisory
Detection
- Nuclei template
- none so far ProjectDiscovery
- Exploit-DB
- no entry Exploit-DB
- Proof-of-concept repositories
- none listed PoC-in-GitHub
Sources
Technical details
- CVSS v3 Vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- Published
- 2023-11-14
- Last Modified
- 2026-06-17
- NVD status
- Modified
Frequently asked questions
What is CVE-2023-43505?
Is CVE-2023-43505 actively exploited?
What is the CVSS score for CVE-2023-43505?
Running Siemens COMOS? Hear about its next vulnerability
Surveillance reads the versions in your stack — a domain, a lockfile or a list — checks each CVE against the ranges its sources publish, and alerts you when one you run is exploited or enters CISA KEV. A version it cannot read stays « version not verified ».
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Related vulnerabilities
Same product first, then the same vendor advisory and the same publication week.