Valmet DNA Web server arbitrary file read access

published 2026-02-12 8 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-206978

cvss: 7.5; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 0.6%; EPSS 0.6% chance of exploitation in 30 days, percentile 46%
public exploits: 0; none known

An unauthenticated attacker can exploit this vulnerability by manipulating URL to achieve arbitrary file read access.This issue affects Valmet DNA Web Tools: C2022 and older.

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-26-050-02 updated 2026-02-19 cvss 8.6

Valmet DNA Engineering Web Tools

Valmet DNA Engineering Web Tools <=C2022
affected: mitigation “For additional information, refer to Valmet's security advisory regarding this issue: https://www.valmet.com/company/innovation/advisories/CVE-2025-15577/.” valmet.com

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

CISA SSVC

Exploitation: none
Automatable: yes
Technical impact: partial
Assessed: 8 mo ago (2026-02-12)

Exploit prediction

0.56% chance of exploitation in the next 30 days, higher than 46% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	4.0	8.7	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N/E:P/S:N/AU:Y/V:D/RE:M/U:Green
CNA	4.0	8.7	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:N/AU:Y/R:X/V:D/RE:M/U:Green
NVD	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected products

Valmet Valmet DNA Web Tools

Classification

Weakness

CWE-22 Improper Limitation of a Pathname to a Restricted Directory

References

valmet.com /company/innovation/advisories/CVE-2025-15577/
vendor-advisory

Sources

CVE List CVE-2025-15577
NVD CVE-2025-15577

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary