VulnerabilityModified
CVE-2021-38399
Honeywell Experion PKS C200, C200E, C300, and ACE controllers are vulnerable to relative path traversal, which may allow an attacker access to unauthorized files and directories.
HIGH 7.5EPSS 0.79%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.79%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Honeywell Experion PKS C200, C200E, C300, and ACE controllers are vulnerable to relative path traversal, which may allow an attacker access to unauthorized files and directories.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- EPSS
- 0.79% probability · 54th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-23, CWE-22
- Affected
- honeywell/c200 firmware · honeywell/c200e firmware · honeywell/c300 firmware · honeywell/application control environment firmware
- Source
- ics-cert@hq.dhs.gov
References
- https://www.cisa.gov/uscert/ics/advisories/icsa-21-278-04Third Party Advisory, US Government Resource
- https://www.honeywellprocess.com/library/support/notifications/Customer/SN2021-02-22-01-Experion-C300-CCL.pdfProduct
- https://www.cisa.gov/uscert/ics/advisories/icsa-21-278-04Third Party Advisory, US Government Resource
- https://www.honeywellprocess.com/library/support/notifications/Customer/SN2021-02-22-01-Experion-C300-CCL.pdfProduct
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.