Security readout for executives and security teams
A 25-year-old flaw in OpenBSD 2.7's IPSEC stack let a remote attacker crash the system by sending malformed empty AH or ESP packets. The issue was disclosed in 2000 and affects only that legacy operating system release. Modern environments almost certainly do not run this version, so business impact today is negligible unless legacy OpenBSD 2.7 systems remain in service. Exposure is limited to hosts still running OpenBSD 2.7 with IPSEC enabled and reachable over untrusted networks. Given the release date (2000), realistic exposure in modern enterprise environments is minimal and generally confined to abandoned or unmanaged legacy systems. Very low priority for modern estates. Only material if you operate OpenBSD 2.7 systems, in which case the broader concern is running a two-decade-old unsupported OS rather than this specific denial-of-service bug. Mitigation focus: Identify any OpenBSD 2.7 systems in your environment and plan decommissioning or upgrade.; Consult current OpenBSD advisories and errata for guidance on legacy IPSEC issues.; Restrict IPSEC endpoints to trusted peers using network ACLs or firewall filtering..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
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CVE-2000-0962 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- openbsd-nmap-dos(5634)CVE reference · vdb-entry, x_refsource_XF
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.