CVE-2015-4059: Heap-based buffer overflow in the License Server (LicenseServer.exe) in Wavelink Terminal Emulation (TE) allow

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HIGH 10.0MITIGATE

CVE-2015-4059 is a high-severity flaw (CVSS 10.0) affecting terminal emulation. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Heap-based buffer overflow in the License Server (LicenseServer.exe) in Wavelink Terminal Emulation (TE) allows remote attackers to execute arbitrary code via a large HTTP header.

Why this priority

Critical severity
EPSS top 8%: very likely to be exploited

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

Risk facts

CVSS score	10.0 (High)
EPSS exploit chance	4.7% (top 8%)
CISA exploited list	No
Weakness	CWE-119
Published	2015-05-29
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: wavelink

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2015-05-29 15:59 UTCPublished CVE record published
2026-06-17 00:26 UTCUpdated Record last modified

wavelink terminal emulation MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy terminal-emulation || rpm -q terminal-emulation || terminal-emulation --version

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

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-2015-4059?

terminal emulation: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2015-4059 being exploited?

CVE-2015-4059 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-2015-4059 affect?

CVE-2015-4059 affects terminal emulation. Severity is high (CVSS 10.0). Heap-based buffer overflow in the License Server (LicenseServer.exe) in Wavelink Terminal Emulation (TE) allows remote attackers to execute arbitrary code via a large HTTP header.

How urgent is CVE-2015-4059?

Priority 58/100. Critical severity; EPSS top 8%: very likely to be exploited

References

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