How severe is CVE-2015-4059?

CVE-2015-4059 has a CVSS 2.0 base score of 10.0, rated critical severity.

Is CVE-2015-4059 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (91st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-4059?

CVE-2015-4059 affects Wavelink Terminal Emulation. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2015-4059?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2015-4059 published?

CVE-2015-4059 was published on 2015-05-29 and last updated on 2026-06-17.

CVE-2015-4059

CVE-2015-4059 is a critical-severity vulnerability in Wavelink Terminal Emulation with a CVSS 2.0 base score of 10.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-119.

Key facts

Severity: Critical (CVSS 2.0 base score 10.0)
EPSS exploit prediction: 5% (91st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Wavelink Terminal Emulation
Published: 2015-05-29
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2015-4059?: 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 severe is CVE-2015-4059?: CVE-2015-4059 has a CVSS 2.0 base score of 10.0, rated critical severity.
Is CVE-2015-4059 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (91st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-4059?: CVE-2015-4059 affects Wavelink Terminal Emulation. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2015-4059?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2015-4059 published?: CVE-2015-4059 was published on 2015-05-29 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:wavelink:terminal_emulation:-:*:*:*:*:*:*:*

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