CVE-2011-3503: Untrusted search path vulnerability in eSignal 10.6.2425.1208, and possibly other versions, allows local users

This month

HIGH 9.3DOWNGRADE

CVE-2011-3503 is a high-severity flaw (CVSS 9.3) affecting esignal. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Untrusted search path vulnerability in eSignal 10.6.2425.1208, and possibly other versions, allows local users, and possibly remote attackers, to execute arbitrary code and conduct DLL hijacking attacks via a Trojan horse JRS_UT.dll that is located in the same folder as a .quo (QUOTE) file. NOTE: the provenance of this information is unknown; the details are obtained solely from third party information.

Why this priority

Critical severity
EPSS top 9%: very likely to be exploited

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	9.3 (High)
EPSS exploit chance	4.3% (top 9%)
CISA exploited list	No
Published	2011-09-16
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: interactivedata

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2011-09-16 17:26 UTCPublished CVE record published
2026-06-16 23:33 UTCUpdated Record last modified

interactivedata esignal DOWNGRADE

Affected: 10.6.2425.1208

Fixed in: no fixed release known

Safe to downgrade to: a release before 10.6.2425.1208

1. Check installed version

apt-cache policy esignal || rpm -q esignal || esignal --version

2. No fixed release: DOWNGRADE to a release before 10.6.2425.1208 (Debian / Ubuntu)

apt-cache madison esignal sudo apt install esignal=<VERSION_BEFORE_10.6.2425.1208> sudo apt-mark hold esignal

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list esignal sudo dnf downgrade esignal-<VERSION_BEFORE_10.6.2425.1208> sudo dnf versionlock add esignal

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
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-2011-3503?

esignal: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2011-3503 being exploited?

CVE-2011-3503 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-2011-3503 affect?

CVE-2011-3503 affects esignal. Severity is high (CVSS 9.3). Untrusted search path vulnerability in eSignal 10.6.2425.1208, and possibly other versions, allows local users, and possibly remote attackers, to execute arbitrary code and conduct DLL hijacking attacks via a Trojan horse JRS_UT.dll that is

How urgent is CVE-2011-3503?

Priority 55/100. Critical severity; EPSS top 9%: very likely to be exploited

Related CVEs

CVE-2011-3494 HIGH 10.0 UPGRADE WinSig.exe in eSignal 10.6.2425 and earlier allows remote attackers to cause a denial of service (crash) and p
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

References

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