Intel Hyperscan: Null pointer dereference leading to denial of service
Summary
A null pointer dereference (CWE-476) in Intel Hyperscan before v5.4.2.1 can be triggered by a local, unprivileged user without authentication or user interaction. Successful exploitation can crash software that uses the library, causing a denial of service. No confidentiality or integrity impact is rated. The NVD analysis is still pending.
Affected
- Intel Hyperscan before v5.4.2.1
Fixed in
- Hyperscan v5.4.2.1 or later (per the CNA record; confirm against the Intel advisory INTEL-SA-01511)
Workaround
- Unknown. No vendor workaround found.
- Restrict local access to trusted users only (general guidance, not from the vendor).
Exploitation
- Not known to be exploited (per OffSeq).
- No public proof of concept found.
- CISA KEV status: not checked.
Our recommendation
- Inventory systems and applications that use Hyperscan.
- Update to Hyperscan v5.4.2.1 or later together with the other fixes from INTEL-SA-01511.
- Prioritise shared multi-user Linux servers and jump hosts.
- Restrict local shell access to trusted users until the update is applied.
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- Intel Security Advisory INTEL-SA-01511 intel.com
- OffSeq Radar: CVE-2026-28730 radar.offseq.com
- Strix: CVE-2026-28730 www.strix.ai
Researched and written up in English and German by an AI (Claude by Anthropic) based on NVD, CISA, EPSS and the sources listed. The vendor information is authoritative. Researched on 11 Nov 2026, 10:03.
Original description (NVD)
Null pointer dereference for some Hyperscan before version v5.4.2.1 within Ring 3: User Applications may allow a denial of service. Unprivileged software adversary with an unauthenticated user combined with a low complexity attack may enable denial of service. This result may potentially occur via local access when attack requirements are not present without special internal knowledge and requires no user interaction. The potential vulnerability may impact the confidentiality (none), integrity (none) and availability (high) of the vulnerable system, resulting in subsequent system confidentiality (none), integrity (none) and availability (none) impacts.
Sources
The tracker combines official, freely usable data sources – updated continuously:
- NVD (NIST) – CVEs, rating (CVSS), affected products
- CISA KEV – vulnerabilities confirmed by CISA as actively exploited
- CISA Vulnrichment – CISA assessment (SSVC) in the official CVE record
- FIRST EPSS – probability of exploitation
- Microsoft MSRC – Patch Tuesday: vulnerabilities, severity, updates
- PoC-in-GitHub – public proof-of-concept repositories
- Metasploit (Rapid7) – modules of the Metasploit Framework
- Exploit-DB (OffSec) – archive of public exploits (links only)
- Patch days: official vendor pages (linked per vendor) (Vendor patch days)
This product uses data from the NVD API but is not endorsed or certified by the NVD. EPSS data © FIRST.org.
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