How severe is CVE-2020-29659?

CVE-2020-29659 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-29659 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-2020-29659?

CVE-2020-29659 affects Flexense Dupscout. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-29659?

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-2020-29659 published?

CVE-2020-29659 was published on 2020-12-09 and last updated on 2026-06-17.

CVE-2020-29659

CVE-2020-29659 is a critical-severity vulnerability in Flexense Dupscout with a CVSS 3.x base score of 9.8. 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-120.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 10.0
EPSS exploit prediction: 5% (91st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-120
Affected product: Flexense Dupscout
Published: 2020-12-09
Last modified: 2026-06-17

Description

A buffer overflow in the web server of Flexense DupScout Enterprise 10.0.18 allows a remote anonymous attacker to execute code as SYSTEM by overflowing the sid parameter via a GET /settings&sid= attack.

Frequently asked questions

What is CVE-2020-29659?: A buffer overflow in the web server of Flexense DupScout Enterprise 10.0.18 allows a remote anonymous attacker to execute code as SYSTEM by overflowing the sid parameter via a GET /settings&sid= attack.
How severe is CVE-2020-29659?: CVE-2020-29659 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-29659 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-2020-29659?: CVE-2020-29659 affects Flexense Dupscout. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-29659?: 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-2020-29659 published?: CVE-2020-29659 was published on 2020-12-09 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:flexense:dupscout:10.0.18:*:*:*:enterprise:*:*:*

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CVE-2017-13696 — Critical (CVSS 9.8): A buffer overflow vulnerability lies in the web server component of Dup Scout Enterprise 9.9.14, Disk Savvy Enterprise…
CVE-2018-10566 — Medium (CVSS 6.1): XSS exists in Flexense DupScout Enterprise from v10.0.18 to v10.7.

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