CVE-2025-7519: Out-of-bounds Write
A flaw was found in polkit. When processing an XML policy with 32 or more nested elements in depth, an out-of-bounds write can be triggered. This issue can lead to a crash or other unexpected behavior, and arbitrary code execution is not discarded. To exploit this flaw, a high-privilege account is needed as it's required to place the malicious policy file properly.
AI Analysis
Technical Summary
This vulnerability in polkit involves an out-of-bounds write triggered by processing deeply nested XML policies (32 or more nested elements). The flaw can lead to denial of service (crash) or potentially arbitrary code execution. Exploitation requires high privileges to deploy a crafted policy file. The CVSS 3.1 score is 6.7, reflecting medium severity with high impact on confidentiality, integrity, and availability. The vendor advisory from Red Hat does not explicitly state patch availability or remediation details.
Potential Impact
Successful exploitation can cause a crash or other unexpected behavior in polkit, potentially leading to arbitrary code execution. Since a high-privilege account is required to place the malicious policy file, the risk is limited to privileged users. The impact includes compromise of system confidentiality, integrity, and availability.
Mitigation Recommendations
Patch status is not yet confirmed — check the Red Hat advisory at https://access.redhat.com/security/cve/CVE-2025-7519 for current remediation guidance. Until a patch is confirmed, restrict access to high-privilege accounts and carefully control the placement of XML policy files to prevent exploitation.
CVE-2025-7519: Out-of-bounds Write
Description
A flaw was found in polkit. When processing an XML policy with 32 or more nested elements in depth, an out-of-bounds write can be triggered. This issue can lead to a crash or other unexpected behavior, and arbitrary code execution is not discarded. To exploit this flaw, a high-privilege account is needed as it's required to place the malicious policy file properly.
CVSS v3.1
Score 6.7medium
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in polkit involves an out-of-bounds write triggered by processing deeply nested XML policies (32 or more nested elements). The flaw can lead to denial of service (crash) or potentially arbitrary code execution. Exploitation requires high privileges to deploy a crafted policy file. The CVSS 3.1 score is 6.7, reflecting medium severity with high impact on confidentiality, integrity, and availability. The vendor advisory from Red Hat does not explicitly state patch availability or remediation details.
Potential Impact
Successful exploitation can cause a crash or other unexpected behavior in polkit, potentially leading to arbitrary code execution. Since a high-privilege account is required to place the malicious policy file, the risk is limited to privileged users. The impact includes compromise of system confidentiality, integrity, and availability.
Mitigation Recommendations
Patch status is not yet confirmed — check the Red Hat advisory at https://access.redhat.com/security/cve/CVE-2025-7519 for current remediation guidance. Until a patch is confirmed, restrict access to high-privilege accounts and carefully control the placement of XML policy files to prevent exploitation.
Technical Details
- Data Version
- 5.1
- Assigner Short Name
- redhat
- Date Reserved
- 2025-07-11T21:18:10.265Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Vendor Advisory Urls
- [{"url":"https://access.redhat.com/security/cve/CVE-2025-7519","vendor":"Red Hat"}]
Threat ID: 68750da0a83201eaacc72b8e
Added to database: 07/14/2025, 14:01:04 UTC
Last enriched: 07/02/2026, 22:09:33 UTC
Last updated: 09/10/2026, 19:36:52 UTC
Views: 214
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