CVE-2025-71263 (GCVE-0-2025-71263)
Vulnerability from cvelistv5 – Published: 2026-03-13 18:38 – Updated: 2026-03-21 22:00 Unsupported When Assigned
VLAI
EPSS
VEX
Summary
In UNIX Fourth Research Edition (v4), the su command is vulnerable to a buffer overflow due to the 'password' variable having a fixed size of 100 bytes. A local user can exploit this to gain root privileges. It is unlikely that UNIX v4 is running anywhere outside of a very small number of lab environments. NOTE: This vulnerability only affects products that are no longer supported by the maintainer.
Severity
7.4 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-13 19:36 UTC
CWE
- CWE-120 - Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Assigner
mitre
CNA
References
6 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| AT&T Bell Labs | UNIX |
Affected:
4
(custom)
|
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Browse all ATT&CK techniques and the vulnerabilities related to each.
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