Trending
CVE-1999-0063

CVE detail

CVE-1999-0063

Cisco IOS 12.0 and other versions can be crashed by malicious UDP packets to the syslog port.

CVSS 5.0 · MediumBuzz score 4.01 OTX pulses

Buzz score

Why this CVE is surfacing

Buzz score total 4.0

This all-time snapshot uses the same composite formula as Trending across a 30-year evidence window, rather than a current rolling window.

Buzz score components · mention 0.0 · diversity 0.0 · KEV 0.0 · OTX 4.0 · PoC 0.0

Mention score

0.0

0 evidence mentions in the snapshot

Diversity score

0.0

0 sources across 0 categories

KEV score

0.0

No KEV entry observed

OTX score

4.0

1 OTX pulses

PoC score

0.0

0 repos · best confidence N/A

Best PoC traction

Maximum stars on a matched PoC repo

Why it matters now

Mention timeline

Total mentions: 0; within the 30d window
Peak daily: 0; highest bucket

Evidence

Source links by recency

Newest mentions first

0 source links · newest first

Exploit code

Public exploit repository references

Public PoC repositories are third-party, potentially unsafe artifacts. Treat their code as untrusted and use it only on authorized systems in an isolated, least-privilege environment. cvebuzz does not execute the code or verify that an exploit works.

0 repository references · best confidence N/A · max 0 stars

No public PoC repositories have been matched yet.

Related records

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External lookup

Potential internet exposure

Potential exposure only — not proof of vulnerability.Shodan results indicate potentially internet-exposed products, not confirmed vulnerable systems. They do not confirm that any returned system is vulnerable to CVE-1999-0063.

Product-level CPE searches intentionally omit version fields and NVD version-range or configuration certainty. Verify the exact product version and configuration independently.

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Product CPE queries

Derived from this CVE's existing NVD CPE 2.3 records; the application, operating-system, or hardware part is retained.

cpe:2.3:o:cisco:iosSearch this product on Shodan

Exact CVE query

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Metadata

Canonical fields

NVD status

Unavailable

Published

Jan 11, 1999

Modified

Jun 16, 2026

Official record

Authoritative NVD record

CVSS vector

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

CWE IDs

Unavailable

Vendor classifications

How this vector reads

CVSS 2.0 base metrics decoded below. This explanation does not recalculate or change the NVD score.

Access Vector (AV): Network. The vulnerable system can be reached across network boundaries.
Access Complexity (AC): Low. No special conditions beyond the attacker-controlled steps are required.
Authentication (Au): None. The attacker does not need to authenticate.
Confidentiality Impact (C): None. There is no impact to this security property.
Integrity Impact (I): None. There is no impact to this security property.
Availability Impact (A): Partial. There is a limited impact to this security property.

Signals

Exploitation indicators

1 stored signals · no KEV · 1 OTX pulses

OTXOTX
- author_name: msudosos
- created: 2026-02-16T04:21:45.064000+00:00
- description: CVE Data msudosos
- name: CVE Data
- pulse_id: 69929b597293fe5837b9c95c
- tags:
- url: https://otx.alienvault.com/pulse/69929b597293fe5837b9c95c
Observed Feb 16, 2026, 4:21 AM