CVE-2001-0609

CRITICALNVD 9.89.8—Weaponized

9.8

Format string vulnerability in Infodrom cfingerd 1.4.3 and earlier allows a remote attacker to gain additional privileges via a malformed ident reply that is passed to the syslog function.

CVSS v3: 9.8
EG Score: 9.8(medium)
EPSS: 93.1%
KEV: Not listed

Published

August 2, 2001

Last Modified

April 16, 2026

Advisory Details (2)

Auto-updated May 1, 2026

No patch confirmed yet.

generic

IBM X-Force Exchange

https://exchange.xforce.ibmcloud.com/vulnerabilities/6364

generic

http://www.securityfocus.com/bid/2576

Data Freshness Timeline

(refreshed 11× 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.

2026-05-29 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
2026-05-20 11:20 UTCepss_batch
2026-05-20 11:20 UTCepss_batch
2026-05-20 07:38 UTCEG score recompute
2026-05-20 07:38 UTCGHSA enrichment
2026-05-20 03:03 UTCEG score recompute
2026-05-20 03:03 UTCGHSA enrichment
2026-05-19 23:12 UTCEG score recompute

Publicly available exploits

(2 references)

Working exploit code is in the public domain (2 Exploit-DB entries). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

Exploit-DBEDB-20749✓ verified
First seen Apr 16, 2001
cfingerd 1.4 - Format String (2)
Open source ↗
Exploit-DBEDB-20748✓ verified
First seen Apr 11, 2001
cfingerd 1.4 - Format String (1)
Open source ↗

Frequently asked(5)

What is CVE-2001-0609?

CVE-2001-0609 is a critical vulnerability published on August 2, 2001. Format string vulnerability in Infodrom cfingerd 1.4.3 and earlier allows a remote attacker to gain additional privileges via a malformed ident reply that is passed to the syslog function.

When was CVE-2001-0609 disclosed?

CVE-2001-0609 was first published in the National Vulnerability Database on August 2, 2001, with the most recent update on April 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2001-0609 actively exploited?

CVE-2001-0609 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 93.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2001-0609?

CVE-2001-0609 has a CVSS v3 base score of 9.8 (NVD).

How do I remediate CVE-2001-0609?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2001-0609, 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

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