NULL Pointer Dereference When Processing a Delta CRL
CVE-2026-28388 is a vulnerability involving a NULL pointer dereference when processing a Delta Certificate Revocation List (CRL) in Microsoft products, including Azure Linux versions 2. 0 and 3. 0. The issue is categorized under CWE-476, which relates to NULL pointer dereference errors. There is no CVSS score available for this vulnerability, and no known exploits have been reported in the wild. No patch or remediation information is currently provided by the vendor, and the vulnerability does not affect cloud services. The impact involves potential application crashes or denial of service due to improper handling of Delta CRLs. No specific affected countries are identified. Given the nature of the vulnerability and lack of exploitation data, the suggested severity is medium.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-28388) concerns a NULL pointer dereference in Microsoft software when processing Delta CRLs. It affects Microsoft and Azure Linux versions 2.0 and 3.0. The flaw is classified as CWE-476, indicating a NULL pointer dereference that could lead to application instability or crashes. No CVSS score or detailed vendor advisory is available, and no patches have been linked. The vulnerability is not known to be exploited in the wild and does not involve cloud-hosted services.
Potential Impact
The vulnerability may cause application crashes or denial of service when processing Delta CRLs due to a NULL pointer dereference. There is no evidence of active exploitation. The impact is limited to affected Microsoft and Azure Linux versions specified. No further impact details or exploitation scenarios are provided.
Mitigation Recommendations
Patch status is not yet confirmed — check the Microsoft Security Response Center advisory for current remediation guidance. Since no official fix or workaround is provided, monitor vendor communications for updates. No cloud service remediation applies as this is not a cloud-hosted service vulnerability.
NULL Pointer Dereference When Processing a Delta CRL
Description
CVE-2026-28388 is a vulnerability involving a NULL pointer dereference when processing a Delta Certificate Revocation List (CRL) in Microsoft products, including Azure Linux versions 2. 0 and 3. 0. The issue is categorized under CWE-476, which relates to NULL pointer dereference errors. There is no CVSS score available for this vulnerability, and no known exploits have been reported in the wild. No patch or remediation information is currently provided by the vendor, and the vulnerability does not affect cloud services. The impact involves potential application crashes or denial of service due to improper handling of Delta CRLs. No specific affected countries are identified. Given the nature of the vulnerability and lack of exploitation data, the suggested severity is medium.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-28388) concerns a NULL pointer dereference in Microsoft software when processing Delta CRLs. It affects Microsoft and Azure Linux versions 2.0 and 3.0. The flaw is classified as CWE-476, indicating a NULL pointer dereference that could lead to application instability or crashes. No CVSS score or detailed vendor advisory is available, and no patches have been linked. The vulnerability is not known to be exploited in the wild and does not involve cloud-hosted services.
Potential Impact
The vulnerability may cause application crashes or denial of service when processing Delta CRLs due to a NULL pointer dereference. There is no evidence of active exploitation. The impact is limited to affected Microsoft and Azure Linux versions specified. No further impact details or exploitation scenarios are provided.
Mitigation Recommendations
Patch status is not yet confirmed — check the Microsoft Security Response Center advisory for current remediation guidance. Since no official fix or workaround is provided, monitor vendor communications for updates. No cloud service remediation applies as this is not a cloud-hosted service vulnerability.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_vex
- Csaf Version
- 2.0
- Publisher
- Microsoft Security Response Center
- Advisory Id
- msrc_CVE-2026-28388
- Cve Count
- 1
- Additional Cves
- []
- Cvss Version
- null
Threat ID: 6a1ca153e29bf47b505e08de
Added to database: 5/31/2026, 9:00:03 PM
Last enriched: 5/31/2026, 9:04:26 PM
Last updated: 6/2/2026, 6:15:48 AM
Views: 10
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