CVE-2009-1786
MEDIUM · CVSS 6.9EPSS 0.7%EU EUVD
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.
Key facts
- CVSS score
- 6.9 (v2.0)
- Severity
- MEDIUM
- CVSS vector
AV:L/AC:M/Au:N/C:C/I:C/A:C- Weakness (CWE)
- CWE-362
- EPSS score
- 0.7% (52th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2009-1781)
- Published
- May 26, 2009
- NVD last modified
- June 16, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2009-1781 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.
View on the EU Vulnerability DatabaseAffected products
- ibm / aix
- ibm / aix
References
- http://aix.software.ibm.com/aix/efixes/security/libc_advisory.asc(Patch, Vendor Advisory)
- http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=802
- http://secunia.com/advisories/35146(Vendor Advisory)
- http://securitytracker.com/id?1022261(Patch)
- http://www.ibm.com/support/docview.wss?uid=isg1IZ50121
- http://www.ibm.com/support/docview.wss?uid=isg1IZ50129
- http://www.ibm.com/support/docview.wss?uid=isg1IZ50139
- http://www.ibm.com/support/docview.wss?uid=isg1IZ50445
- http://www.ibm.com/support/docview.wss?uid=isg1IZ50447
- http://www.ibm.com/support/docview.wss?uid=isg1IZ50500
- http://www.ibm.com/support/docview.wss?uid=isg1IZ50517
- http://www.osvdb.org/54617
- http://www.securityfocus.com/bid/35034
- http://www.vupen.com/english/advisories/2009/1380(Vendor Advisory)
- https://exchange.xforce.ibmcloud.com/vulnerabilities/50636
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6276
- https://www.exploit-db.com/exploits/9306
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
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