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CVE-1999-0099· NVD / CVE Program· CNA mitre

Buffer overflow in syslog utility allows local or remote attackers to gain root privileges.

Noroxi assessment

Priority: Plan (action score 41/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 3.2% (FIRST EPSS); higher than 88.1% of all records.
  • No special conditions are required; it is repeatable.
  • According to the record, no fixed version is available yet.

Add it to your regular patch cycle. Update when a fix is released; follow the vendor's advisory.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

CriticalCVSS 10.0 · v2.0—No exploit No fix recorded
Published
Oct 19, 1995
Updated
Jun 16, 2026
EPSS
3.2% · 88th percentile
CWE
—

Report tools

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Action score

41

Plan

Add it to your regular patch cycle.

CVSS
40 / 40 · 10.0 / 10
CISA KEV
0 / 30 · Not listed
EPSS
1 / 30 · 3.2%

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • No fixed version yet

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-1999-0099

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
bsdibsd os
convexconvexos
convexspp-ux
crayunicos
ibmaix
sunsolaris
sunsunos

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • bsdi bsd os2.0
  • bsdi bsd os2.0.1
  • convex convexos10.1
  • convex convexos10.2
  • convex convexos11.0
  • convex convexos11.1
  • convex spp-ux3
  • cray unicos8.0
  • cray unicos8.3
  • cray unicos9.0
  • ibm aix3.2
  • ibm aix4.1
  • sun solaris2.4
  • sun sunos4.1.3
  • sun sunos4.1.3u1
  • sun sunos4.1.4
  • sun sunos5.3
  • sun sunos5.4

Same product

bsdi: all records

Other highest-scoring records for the same primary product.

  • CVE-1999-0046Buffer overflow of rlogin program using TERM environmental variable.
    56Plan
  • CVE-1999-0002Buffer overflow in NFS mountd gives root access to remote attackers, mostly in Linux systems.
    48Plan
  • CVE-1999-0879Buffer overflow in WU-FTPD and related FTP servers allows remote attackers to gain root privileges via macro variables in a message file.
    43Plan
  • CVE-1999-0704Buffer overflow in Berkeley automounter daemon (amd) logging facility provided in the Linux am-utils package and others.
    38Monitor
  • CVE-2001-1541Buffer overflow in Unix-to-Unix Copy Protocol (UUCP) in BSDI BSD/OS 3.0 through 4.2 allows local users to execute arbitrary code via a long
    28Monitor
  • CVE-2000-1103rcvtty in BSD 3.0 and 4.0 does not properly drop privileges before executing a script, which allows local attackers to gain privileges by sp
    28Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

The product’s vendor appears in a public program. Matched by name; verify the scope text in the program.

Technical details

Attack conditions

  • No special conditions are required; it is repeatable.

If successful

Confidentiality
C · data can be read
Integrity
C · data or configuration can be modified
Availability
C · the service can be disrupted
Attack complexity
Low
Confidentiality impact
C
Integrity impact
C
Availability impact
C

Weakness class (CWE)

—

CVSS vector

AV:N/AC:L/Au:N/C:C/I:C/A:C

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records