PatchTheCVECVE-2011-3494: WinSig.exe in eSignal 10.6.2425 and earlier allows remote attackers to cause a denial of service (crash) and p
CVE-2011-3494 is a high-severity flaw (CVSS 10.0) affecting esignal. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
WinSig.exe in eSignal 10.6.2425 and earlier allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via (1) a long StyleTemplate element in a QUO, SUM or POR file, which triggers a stack-based buffer overflow, or (2) a long Font->FaceName field (aka FaceName element), which triggers a heap-based buffer overflow. NOTE: some of these details are obtained from third party information.
Why this priority
- Critical severity
- EPSS top 1%: very likely to be exploited
- Public exploit reference
A fixed release or distro patch exists.
Risk facts
| CVSS score | 10.0 (High) |
| EPSS exploit chance | 55.8% (top 1%) |
| CISA exploited list | No |
| Weakness | CWE-119 |
| Published | 2011-09-16 |
| Last modified | 2026-06-16 |
Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Public exploits and detection
Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.
- Exploit-DB: eSignal and eSignal Pro 10.6.2425.1208 - Multiple Vulnerabilities
- Exploit-DB: eSignal and eSignal Pro 10.6.2425.1208 - File Parsing Buffer Overflow in QUO (Metasploit)
- Metasploit: eSignal and eSignal Pro File Parsing Buffer Overflow in QUO
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2011-3494?
esignal: upgrade to newer than 10.6.2425. Exact commands for each OS are on this page.
Is CVE-2011-3494 being exploited?
CVE-2011-3494 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2011-3494 affect?
CVE-2011-3494 affects esignal. Severity is high (CVSS 10.0). WinSig.exe in eSignal 10.6.2425 and earlier allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via (1) a long StyleTemplate element in a QUO, SUM or POR file, which triggers a stack-based buffer
How urgent is CVE-2011-3494?
Priority 65/100. Critical severity; EPSS top 1%: very likely to be exploited; Public exploit reference
Related CVEs
- CVE-2011-3503 HIGH 9.3 DOWNGRADE Untrusted search path vulnerability in eSignal 10.6.2425.1208, and possibly other versions, allows local users
- CVE-2004-1868 HIGH 7.5 DOWNGRADE Stack-based buffer overflow in WinSig.exe in eSignal 7.5 and 7.6 allows remote attackers to execute arbitrary