CVE-1999-0511

CRITICALNVD 9.19.1—Trending — 3 sources updated this week

9.1

IP forwarding is enabled on a machine which is not a router or firewall.

CVSS v3: 9.1
EG Score: 9.1(medium)
EPSS: 92.1%
KEV: Not listed

Published

January 1, 1997

Last Modified

May 28, 2026

Advisory Details (1)

Auto-updated May 28, 2026

No patch confirmed yet.

generic

https://www.cve.org/CVERecord?id=CVE-1999-0511

Vendor Advisories for CVE-1999-0511(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

GHSA-3fwm-5x3q-64xf
GitHub Security AdvisoriesHigh
IP forwarding is enabled on a machine which is not a router or firewall.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-200Exposure of Sensitive Information to an Unauthorized Actor

Data Freshness Timeline

(refreshed 14× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-02 20:10 UTCepss_batch
2026-06-01 13:48 UTCepss_batch
2026-05-31 23:08 UTCEG score recompute
2026-05-31 23:08 UTCGHSA enrichment
2026-05-31 22:27 UTCepss_batch
2026-05-31 00:13 UTCepss_batch
2026-05-31 00:13 UTCepss_batch
2026-05-29 13:40 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-27 13:37 UTCepss_batch
2026-05-27 13:37 UTCepss_batch
2026-05-26 13:41 UTCepss_batch
2026-05-26 13:41 UTCepss_batch
2026-05-26 13:41 UTCepss_batch
2026-05-24 16:42 UTCepss_batch
2026-05-21 22:38 UTCepss_batch
2026-05-20 22:36 UTCepss_batch

Frequently asked(5)

What is CVE-1999-0511?

CVE-1999-0511 is a critical vulnerability published on January 1, 1997. IP forwarding is enabled on a machine which is not a router or firewall.

When was CVE-1999-0511 disclosed?

CVE-1999-0511 was first published in the National Vulnerability Database on January 1, 1997, with the most recent update on May 28, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-1999-0511 actively exploited?

CVE-1999-0511 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 92.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-1999-0511?

CVE-1999-0511 has a CVSS v3 base score of 9.1 (NVD).

How do I remediate CVE-1999-0511?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-1999-0511, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-1999-0511

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CVE-1999-0511

📅 Published

🔄 Last Modified

📋 Advisory Details (1)

📣 Vendor Advisories for CVE-1999-0511(1)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)