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CVE-2009-1786

Status: ModifiedMedium (6.9)—Exploit
Severity6.9Medium · CVSS 2.0
Exploitation probability0.67 %higher than 51% of CVEs
Active exploitationNonot in the CISA catalog
Public exploitAvailablePublished on Exploit-DB

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

Base score
6.9
Version
2.0
Vector
AV:L/AC:M/Au:N/C:C/I:C/A:C

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days
0.67 %
Percentile among all scored CVEs
51
Score date
10/20/2026

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Public exploits

Exploit code or detection templates are publicly available. This is not the same as confirmed active exploitation (KEV), but it raises the risk: patch with priority.

Affected technologies (1)

IBM — AIX

CWEs

References

Show 34 references

Raw JSON (NVD)

Show
{
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  "lastModified": "2026-06-16T23:08:03.400",
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}