CVE-2012-5100

NONECVSS 0.0Weaponized

0.0

Directory traversal vulnerability in HServer 0.1.1 allows remote attackers to read arbitrary files via a (1) ..%5c (dot dot encoded backslash) or (2) %2e%2e%5c (encoded dot dot backslash) in the PATH_INFO.

CVSS v3: —
EG Score: 0.0(none)
EPSS: 89.6%
KEV: Not listed

Published

September 23, 2012

Last Modified

April 29, 2026

References (6)

cve@mitrehttp://archives.neohapsis.com/archives/bugtraq/2012-01/0028.html
cve@mitrehttp://www.securityfocus.com/bid/51286
cve@mitrehttps://exchange.xforce.ibmcloud.com/vulnerabilities/72138
af854a3a-2127-422b-91ae-364da2661108http://archives.neohapsis.com/archives/bugtraq/2012-01/0028.html
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/51286
af854a3a-2127-422b-91ae-364da2661108https://exchange.xforce.ibmcloud.com/vulnerabilities/72138

Weakness Classification(1)

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

CWE-22Path Traversal

Data Freshness Timeline

(refreshed 10× 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.

2026-06-05 06:08 UTCepss_batch
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2026-06-04 13:09 UTCepss_batch
2026-06-02 20:10 UTCepss_batch
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2026-06-01 13:49 UTCepss_batch
2026-05-31 22:28 UTCepss_batch
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2026-05-31 00:14 UTCepss_batch
2026-05-31 00:14 UTCepss_batch
2026-05-29 13:41 UTCepss_batch
2026-05-29 02:36 UTCEG score recompute
2026-05-29 02:36 UTCGHSA enrichment
2026-05-28 13:42 UTCepss_batch
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2026-05-27 13:38 UTCepss_batch
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2026-05-26 13:41 UTCepss_batch
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2026-05-26 07:16 UTCepss_batch

Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

Exploit-DBEDB-36500✓ verified
First seen Jan 5, 2012
HServer 0.1.1 - Directory Traversal
Open source ↗

Frequently asked(4)

What is CVE-2012-5100?

CVE-2012-5100 is a none vulnerability published on September 23, 2012. Directory traversal vulnerability in HServer 0.1.1 allows remote attackers to read arbitrary files via a (1) ..%5c (dot dot encoded backslash) or (2) %2e%2e%5c (encoded dot dot backslash) in the PATH_INFO.

When was CVE-2012-5100 disclosed?

CVE-2012-5100 was first published in the National Vulnerability Database on September 23, 2012, with the most recent update on April 29, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2012-5100 actively exploited?

CVE-2012-5100 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 89.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

How do I remediate CVE-2012-5100?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2012-5100, 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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CVE-2012-5100

📅 Published

🔄 Last Modified

🔗 References (6)

Weakness Classification(1)

Data Freshness Timeline

Publicly available exploits

❓ Frequently asked(4)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2012-5100?

🔗 Related CVEs(same CWE)

Same CWE

Published

Last Modified

References (6)

Frequently asked(4)

Related CVEs(same CWE)