Microsoft · NULL Pointer Dereference When Processing a Delta CRL
Affects MicrosoftSource GCVE Database
Mentioned vulnerabilities
Not known to be exploited.
Data as of 29 Oct 2026, 19:04 UTC
Rated by Threat Radar · No CVSS score from NVD or the CNA
- EPSS
- 0.8% chance of exploitation in 30 days – higher than 59% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Exploitation evidence
Disclosed: evidence found.
CVE published 9 Apr 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Microsoft Security Response Center Microsoft | Affected
| Fixed in– |
AI-suggested
A security update addressing these vulnerabilities is available for SUSE's openssl-1_0_0 packages. Users should apply the official patches provided by their vendor to remediate these issues. Patch status is not explicitly confirmed in the provided data; therefore, users should consult the vendor advisory for the latest remediation guidance.
Description
Multiple vulnerabilities including NULL pointer dereference, heap buffer overflows, out-of-bounds reads, and use-after-free conditions were identified in OpenSSL 1.0.0 and related components. These issues affect ASN.1 parsing, CMS decryption, PKCS7 verification, and OCSP response processing, potentially causing crashes or memory corruption. The vulnerabilities are addressed in a security update for SUSE's openssl-1_0_0 packages and include fixes for CVE-2026-28388 among others.
References
- msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-28388.json (opens in a new tab)
- support.microsoft.com/lifecycle (opens in a new tab)
- first.org/cvss (opens in a new tab)
- suse.com/support/security/rating/ (opens in a new tab)
- ftp.suse.com/pub/projects/security/csaf/suse-su-2026_2396-1.json (opens in a new tab)
- suse.com/support/update/announcement/2026/suse-su-20262396-1/ (opens in a new tab)
- lists.suse.com/pipermail/sle-updates/2026-June/047328.html (opens in a new tab)
- bugzilla.suse.com/1260442 (opens in a new tab)
- bugzilla.suse.com/1260443 (opens in a new tab)
- bugzilla.suse.com/1260446 (opens in a new tab)
- bugzilla.suse.com/1266340 (opens in a new tab)
- bugzilla.suse.com/1266341 (opens in a new tab)
- bugzilla.suse.com/1266342 (opens in a new tab)
- bugzilla.suse.com/1266349 (opens in a new tab)
- bugzilla.suse.com/1266357 (opens in a new tab)
- suse.com/security/cve/CVE-2026-28388/ (opens in a new tab)
- suse.com/security/cve/CVE-2026-28389/ (opens in a new tab)
- suse.com/security/cve/CVE-2026-34180/ (opens in a new tab)
- suse.com/security/cve/CVE-2026-42766/ (opens in a new tab)
- suse.com/security/cve/CVE-2026-45447/ (opens in a new tab)
- suse.com/security/cve/CVE-2026-7383/ (opens in a new tab)
- suse.com/security/cve/CVE-2026-9076/ (opens in a new tab)