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CVE-2026-65610

Numeric Truncation Error in nnn PUBLISHED

Description (CNA)

nnn stores homelen variable as uchar_t, which can only represent values in the range 0-255. An attacker who can influence the victim's execution environment can provide an arbitrary HOME path with length that is truncated to 0. The expression (homelen - 1) is promoted to signed int and becomes -1 and producing an out-of-bounds read and an out-of-bounds write one byte before the path buffer.  Maintainer of this project was notified about this vulnerability. It might has been addressed, but the maintainer did not provide a vulnerable version range. Only version 5.2 was tested and confirmed as vulnerable.

Affected (CNA)

Vendor / productVersions
nnn / nnnaffected 5.2

CWE

CWE-197

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.