CVE-2009-1786

NONECVSS 0.0Trending — 3 sources updated this weekWeaponized

0.0

The malloc subsystem in libc in IBM AIX 5.3 and 6.1 allows local users to create or overwrite arbitrary files via a symlink attack on the log file associated with the MALLOCDEBUG environment variable.

CVSS v3: —
EG Score: 0.0(none)
EPSS: 36.5%
KEV: Not listed

Published

May 26, 2009

Last Modified

April 23, 2026

References (34)

cve@mitrehttp://aix.software.ibm.com/aix/efixes/security/libc_advisory.asc
cve@mitrehttp://labs.idefense.com/intelligence/vulnerabilities/display.php?id=802
cve@mitrehttp://secunia.com/advisories/35146
cve@mitrehttp://securitytracker.com/id?1022261
cve@mitrehttp://www.ibm.com/support/docview.wss?uid=isg1IZ50121
cve@mitrehttp://www.ibm.com/support/docview.wss?uid=isg1IZ50129
cve@mitrehttp://www.ibm.com/support/docview.wss?uid=isg1IZ50139
cve@mitrehttp://www.ibm.com/support/docview.wss?uid=isg1IZ50445
cve@mitrehttp://www.ibm.com/support/docview.wss?uid=isg1IZ50447
cve@mitrehttp://www.ibm.com/support/docview.wss?uid=isg1IZ50500
cve@mitrehttp://www.ibm.com/support/docview.wss?uid=isg1IZ50517
cve@mitrehttp://www.osvdb.org/54617
cve@mitrehttp://www.securityfocus.com/bid/35034
cve@mitrehttp://www.vupen.com/english/advisories/2009/1380
cve@mitrehttps://exchange.xforce.ibmcloud.com/vulnerabilities/50636

Weakness Classification(1)

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

CWE-362Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition)

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
2026-06-02 20:10 UTCepss_batch
2026-06-01 13:49 UTCepss_batch
2026-06-01 13:49 UTCepss_batch
2026-05-31 22:28 UTCepss_batch
2026-05-31 22:28 UTCepss_batch
2026-05-31 00:13 UTCepss_batch
2026-05-31 00:13 UTCepss_batch
2026-05-30 16:45 UTCEG score recompute
2026-05-30 16:45 UTCGHSA enrichment
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
2026-05-27 13:38 UTCepss_batch
2026-05-27 13:38 UTCepss_batch
2026-05-26 13:41 UTCepss_batch
2026-05-26 13:41 UTCepss_batch
2026-05-26 07:16 UTCepss_batch
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-33001✓ verified
First seen May 20, 2009
Kingsoft Webshield 1.1.0.62 - Cross-Site Scripting / Remote Command Execution
Open source ↗

Frequently asked(4)

What is CVE-2009-1786?

CVE-2009-1786 is a none vulnerability published on May 26, 2009. The malloc subsystem in libc in IBM AIX 5.3 and 6.1 allows local users to create or overwrite arbitrary files via a symlink attack on the log file associated with the MALLOCDEBUG environment variable.

When was CVE-2009-1786 disclosed?

CVE-2009-1786 was first published in the National Vulnerability Database on May 26, 2009, with the most recent update on April 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2009-1786 actively exploited?

CVE-2009-1786 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 36.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

How do I remediate CVE-2009-1786?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2009-1786, 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-2009-1786

Explore →

Is Your Infrastructure Affected by CVE-2009-1786?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs

CVE-2009-1786

📅 Published

🔄 Last Modified

🔗 References (34)

Weakness Classification(1)

Data Freshness Timeline

Publicly available exploits

❓ Frequently asked(4)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2009-1786?

🔗 Related CVEs(same CWE)

Same CWE

Published

Last Modified

References (34)

Frequently asked(4)

Related CVEs(same CWE)