Cortex XDR Agent: Exceptional condition denial-of-service (DoS)
An improper handling of exceptional conditions vulnerability in Cortex XDR Agent allows a local authenticated Windows user to create files in the software's internal program directory that prevents the Cortex XDR Agent from starting. The exceptional condition is persistent and prevents Cortex XDR Agent from starting when the software or machine is restarted. This issue impacts: Cortex XDR Agent 5.0 versions earlier than 5.0.10; Cortex XDR Agent 6.1 versions earlier than 6.1.7; Cortex XDR Agent 7.0 versions earlier than 7.0.3; Cortex XDR Agent 7.1 versions earlier than 7.1.2.
- Published
- Dec 9, 2020
- Updated
- Jun 16, 2026
- EPSS
- 0.3% · 21th percentile
- CWE
- CWE-755
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Report tools
Action score
22
Monitor
Low priority for now.
- CVSS
- 22 / 40 · 5.5 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.3%
CNA vs NVD score
- NVD
- —
- CNA · palo_alto
- 5.5
- NVD has not scored this yet; the score shown is the CNA’s.
The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| paloaltonetworks | cortex xdr agent | cpe:2.3:a:paloaltonetworks:cortex_xdr_agent |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- paloaltonetworks cortex xdr agent5.0 and later · before 5.0.10
- paloaltonetworks cortex xdr agent6.1 and later · before 6.1.7
- paloaltonetworks cortex xdr agent7.0 and later · before 7.0.3
- paloaltonetworks cortex xdr agent7.1 and later · before 7.1.2
Versions reported by the vendor
Affected version ranges reported by the assigning authority (palo_alto). Independent of NVD's CPE analysis and usually ahead of it.
Palo Alto Networks Cortex XDR Agent
- 7.0 and later · before 7.0.3affectedfixed in 7.0.3
- 7.1 and later · before 7.1.2affectedfixed in 7.1.2
- 5.0 and later · before 5.0.10affectedfixed in 5.0.10
- 6.1 and later · before 6.1.7affectedfixed in 6.1.7
- 7.2.0 and later · before 7.2*not affected
Same product
paloaltonetworks: all recordsOther highest-scoring records for the same primary product.
- CVE-2023-0002Cortex XDR Agent: Product Disruption by Local Windows User31Monitor
- CVE-2022-0015Cortex XDR Agent: An Uncontrolled Search Path Element Leads to Local Privilege Escalation (PE) Vulnerability31Monitor
- CVE-2021-3042Cortex XDR Agent: Improper Control of User-Controlled File Leads to Local Privilege Escalation31Monitor
- CVE-2021-3041Cortex XDR Agent: Improper control of user-controlled file leads to local privilege escalation31Monitor
- CVE-2020-2049Cortex XDR Agent: Improper control of loaded DLL leads to local privilege escalation31Monitor
- CVE-2022-0014Cortex XDR Agent: Unintended Program Execution When Using Live Terminal Session29Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| Palo Alto Networks Cortex XDR Agent | 5.0.10 | Vendor (CNA) |
| Palo Alto Networks Cortex XDR Agent | 6.1.7 | Vendor (CNA) |
| Palo Alto Networks Cortex XDR Agent | 7.0.3 | Vendor (CNA) |
| Palo Alto Networks Cortex XDR Agent | 7.1.2 | Vendor (CNA) |
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
- Paul van der HaasOrange Cyberdefense for discovering and reporting this issue.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Someone with local access to the system can trigger it.
- A low-privileged account is enough.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- none
- Integrity
- none
- Availability
- high · the service can be disrupted
- Attack vector
- Local
- Attack complexity
- Low
- Privileges required
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- None
- Integrity impact
- None
- Availability impact
- High
Weakness class (CWE)
CWE-755 · Improper Handling of Exceptional ConditionsCVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
nvd-secondary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
MITRE has no CAPEC/ATT&CK mapping for this CWE.
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpChange log
- Fix✗ → ✓
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References
Vendor advisories and official records. Exploit/PoC links are deliberately left out.