CVE-2021-26726
No exploitation reported by the sources we read.
- Published2022-02-16
- WeaknessCWE-209 · CWE-272 · CWE-305
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 remote code execution vulnerability affecting a Valmet DNA service listening on TCP port 1517, allows an attacker to execute commands with SYSTEM privileges This issue affects: Valmet DNA versions from Collection 2012 until Collection 2021.
Timeline
dates in UTC- 2022-02-1616:15CVE 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-2021-26726?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2021-26726?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 |
|---|---|---|---|
| 2021.x | ≥ 2012, ≤ 2021 | 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
Valmet DNA
Valmet DNA: Versions from Collection 2012 to Collection 2021
Fix
- Mitigation from the vendor CISA ICSA-22-102-01 · 1 productUpdate to the latest version. Contact Valmet customer service to obtain the update.
- Mitigation from the vendor CISA ICSA-22-102-01 · 1 productEnsure a properly configured firewall is in place to prevent unauthorized access from untrusted networks to the system.
- Mitigation from the vendor CISA ICSA-22-102-01 · 1 productFor more information see Valmet's Security Advisory.
Advisories and patches
- www.valmet.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:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Published
- 2022-02-16
- Last Modified
- 2026-06-17
- NVD status
- Modified
Frequently asked questions
What is CVE-2021-26726?
Is CVE-2021-26726 actively exploited?
What is the CVSS score for CVE-2021-26726?
Running Valmet DNA? 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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Go further
- Following what attackers exploit right now? The CISA KEV additions of the month, with their patch deadlines.
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Related vulnerabilities
Same product first, then the same vendor advisory and the same publication week.