How severe is CVE-2026-65939?

CVE-2026-65939 has a CVSS 3.x base score of 6.8, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-65939 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-65939?

CVE-2026-65939 affects Progress Whatsup Gold. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-65939?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2026-65939 published?

CVE-2026-65939 was published on 2026-08-12 and last updated on 2026-09-02.

CVE-2026-65939

CVE-2026-65939 is a medium-severity vulnerability in Progress Whatsup Gold with a CVSS 3.x base score of 6.8. 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-22.

Key facts

Severity: Medium (CVSS 3.x base score 6.8)
EPSS exploit prediction: 0% (30th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-22
Affected product: Progress Whatsup Gold
Published: 2026-08-12
Last modified: 2026-09-02

Description

In WhatsUp Gold versions released before 2026.0.2, a privileged attacker can create a LogToFile action specifying an arbitrary file extension within the IIS web root.

Frequently asked questions

What is CVE-2026-65939?: In WhatsUp Gold versions released before 2026.0.2, a privileged attacker can create a LogToFile action specifying an arbitrary file extension within the IIS web root.
How severe is CVE-2026-65939?: CVE-2026-65939 has a CVSS 3.x base score of 6.8, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-65939 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-65939?: CVE-2026-65939 affects Progress Whatsup Gold. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-65939?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2026-65939 published?: CVE-2026-65939 was published on 2026-08-12 and last updated on 2026-09-02.

References

Affected products (1)

cpe:2.3:a:progress:whatsup_gold:*:*:*:*:*:*:*:*

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