LOW
CVE-1999-1214
CWE-255Published: September 15, 1997· Updated: Jun 16, 2026
2.1
CVSS v3.1
Official Description
The asynchronous I/O facility in 4.4 BSD kernel does not check user credentials when setting the recipient of I/O notification, which allows local users to cause a denial of service by using certain ioctl and fcntl calls to cause the signal to be sent to an arbitrary process ID.
Technical Analysis
CVE-1999-1214 requires local access, meaning attackers must already have a foothold on the target system.
Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.
User Interaction
Scope
Impact
ConfidentialityNone
IntegrityNone
AvailabilityP
AV:L/AC:L/Au:N/C:N/I:N/A:P
Affected Vendors & Products
Exploit & PoC Resources
NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
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Rapid7 / Metasploit
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NVD Detail
Official NIST entry
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CVE Program entry
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All References (12)
Quick Facts
CVE IDCVE-1999-1214
CVSS Score2.1 / 10
SeverityLOW
WeaknessCWE-255
CISA KEVNo
Affected5 vendor(s)
PublishedSep 15, 1997
Related CVEs (CWE-255)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-1999-1214 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.