Applications
CVE-2026-126325
Critical RCE via unsafe deserialization in PTC Windchill and FlexPLM.
Major vulnerability. Critical unauthenticated RCE in enterprise PLM (PTC Windchill/FlexPLM) can lead to full system compromise, IP theft and supply-chain disruption across customers; high-newsworthiness for affected orgs.
- CVSS
- 9.2Criticalscored by the publisher (CNA)
- Exploited in the wild
- Not knownnot in CISA KEV as of our last sync
- EPSS
- 0.51%chance of exploitation in the next 30 daystop 56% of scored CVEsFIRST score of 12 Nov 2026
- Fix
- Patch availablesee the advisories in the references
- Published
- 11 Nov 2026analysed here 13 Nov 2026
Summary
Impact
Remote code execution via deserialization of untrusted data; attacker can execute arbitrary code, gain server control, access IP and disrupt PLM workflows.
Triage
- Attack surface
- Server-side
- Exploitable
- At runtime
- Attack vector
- network
- Can a WAF block it?
- Partly. See why
The summary, impact and action text on this page are written by our AI analysis pipeline, or taken from the NVD description when a CVE was imported from NVD. They are not the vendor's wording: check them against the sources. A longer AI executive summary and technical analysis are generated for signed-in accounts on the Max plan.
Affected products
| Product | Affected versions | Vendor says fixed in |
|---|---|---|
| PTC FlexPLM | 11.0 M03011.1 M02011.2.1.012.0.2.012.1.2.013.0.2.013.1.0.013.1.1.013.1.2.013.1.3.0Vendor says fixed in: not stated | |
| PTC Windchill | 11.0 M03011.1 M02011.2.1.012.0.2.012.1.2.013.0.2.013.1.0.013.1.1.013.1.2.013.1.3.013.1.4.0Vendor says fixed in: not stated |
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.
Products named in our analysis
- PTC Windchill
- PTC FlexPLM
Fix and mitigation
Action required
Immediate action required
WAF and other mitigations
Can a WAF block it? Partly. Insecure deserialization payloads can be built from many different gadget chains, so WAF signatures only catch the known ones.
Also consider: allow-list classes · patch
Based on the weakness type only; no CVE-specific evidence yet. We check Cloudflare, AWS, Google Cloud Armor and Azure; for Akamai, Imperva, Fastly, F5, ask your vendor.
Remediation steps (AI-written)
Step-by-step remediation is generated for accounts on the Max plan, for CVEs that match a technology in their stack. Add this technology to your stack to see the fix checklist.
Exploitation evidence
- CISA KEV catalog
- Not listed as of our last sync.
- Public exploit code
- None on record in Exploit-DB, Metasploit, Nuclei templates or PoC-in-GitHub.
Timeline
- 11 Nov 2026Published
- 11 Nov 2026CVE record last updatedsame day later
- 13 Nov 2026Analysed by vulneraibility.com2 days later
Common questions
Is CVE-2026-126325 being exploited?
Not confirmed. CVE-2026-126325 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.51% probability of exploitation in the next 30 days.
How severe is CVE-2026-126325?
CVE-2026-126325 is rated Critical with a CVSS score of 9.2. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-126325?
Yes. A fix has been recorded for CVE-2026-126325. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-126325 affect?
CVE-2026-126325 affects PTC Windchill, PTC FlexPLM. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-126325?
Apply vendor patch immediately; isolate affected servers and audit logs.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
References
1 reference in the CVE record, grouped by the tags the record gives them.
Advisories (1)
- ptc.com /en/support/article/CS483249
Where the data on this page comes from
- CVE List (CVE.org): description, affected versions, references; CVE Terms of Use
- NVD: CVSS and CPE data
- FIRST EPSS: exploit probability and percentile
Summary, impact and triage tags: written by our AI analysis pipeline from the sources above. Check them against the sources.
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