Sysax Multi Server versions prior to 5.55 contain a stack-based buffer overflow in its SSH service. When a remote attacker supplies an overly long username during authentication, the server copies the input to a fixed-size stack buffer without proper bounds checking. This allows remote code execution under the context of the service.
CVE-2012-10060
Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2025-08-13. NVD baseline CVSS 9.3; sources differ by 0.5.
- High severity, but no confirmed exploitation yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 9.8
- EG Score
- 9.8(medium)
- EPSS
- 86.0%
- KEV
- Not listed
Published
August 13, 2025
Last Modified
May 26, 2026
Advisory Details (7)
Auto-updated Jun 20, 2026Sysax Multi Server < 5.55 SSH Username Buffer Overflow | Advisories | VulnCheck
https://www.vulncheck.com/advisories/sysax-multi-server-ssh-username-buffer-overflowpwnag3: Sysax Multi Server SSH Username Exploit
https://web.archive.org/web/20120302203344/http://www.pwnag3.com/2012/02/sysax-multi-server-ssh-username-exploit.htmlcpai-23-sepc - Check Point Software
https://advisories.checkpoint.com/defense/advisories/public/2012/cpai-23-sepc.htmlSysax 5.53 - SSH 'Username' Remote Buffer Overflow (Metasploit) - Windows remote Exploit
https://www.exploit-db.com/exploits/18557Sysax 5.53 - SSH 'Username' Remote Buffer Overflow Remote Code Execution (Egghunter) - Windows remote Exploit
https://www.exploit-db.com/exploits/18535Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 11× in last 7d / 37× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
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- 2026-05-26 13:40 UTCEG score recompute
- 2026-05-26 13:40 UTCGHSA enrichment
Publicly available exploits
(1 reference)Working exploit code is in the public domain (1 Metasploit module). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.
- Metasploitexploit/windows/ssh/sysax_ssh_username✓ verifiedFirst seen Feb 27, 2012
Sysax 5.53 SSH Username Buffer Overflow
Open source ↗
Related CVEs(same CWE)
Same CWE
10 shownCWE-121
- CVE-2012-10058EG 10.0CRITICAL
- CVE-2010-20113EG 9.8CRITICAL
- CVE-2010-20121EG 9.8CRITICAL
- CVE-2012-10023EG 9.8CRITICAL
- CVE-2013-10042EG 9.8CRITICAL
- CVE-2012-10021EG 9.8CRITICAL
- CVE-2014-125117EG 9.8EPSS 91%CRITICAL
- CVE-2017-14854NVD 9.1EG 9.8EPSS 94%CRITICAL
- CVE-2015-1006EG 9.8EPSS 92%CRITICAL
- CVE-2014-9189EG 9.8EPSS 92%CRITICAL
Frequently asked(5)
What is CVE-2012-10060?
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What is the CVSS score of CVE-2012-10060?
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