WinSig.exe in eSignal 10.6.2425 and earlier allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary cod…

published 2011-09-16 15 y ago modified 2026-06-16 4 mo ago also EUVD-2011-3457

cvss: 10.0; version 2.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 55.8%; EPSS 55.8% chance of exploitation in 30 days, percentile 99%
public exploits: 3; Metasploit, Exploit-DB

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.

Timeline

2011-09-06 First public exploit (Metasploit exploit/windows/fileformat/esignal_styletemplate_bof)
2011-09-16 Published

Exploit prediction

55.78% chance of exploitation in the next 30 days, higher than 99% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

Metasploit exploit/windows/fileformat/esignal_styletemplate_bof eSignal and eSignal Pro File Parsing Buffer Overflow in QUO metasploit exploit, normal rank, 2011-09-06
EDB-17880 eSignal and eSignal Pro 10.6.2425.1208 - File Parsing Buffer Overflow in QUO (Metasploit) local, 2011-09-20
EDB-17837 eSignal and eSignal Pro 10.6.2425.1208 - Multiple Vulnerabilities dos, 2011-09-14
aluigi.altervista.org http://aluigi.altervista.org/adv/esignal_1-adv.txt referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
NVD	2.0	10.0	AV:N/AC:L/Au:N/C:C/I:C/A:C

Classification

Weakness

CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

References

aluigi.altervista.org /adv/esignal_1-adv.txt
exploit
secunia.com /advisories/45966
third-party-advisory, vendor-advisory

Sources

CVE List CVE-2011-3494
NVD CVE-2011-3494

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary