How severe is CVE-2026-5709?

CVE-2026-5709 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-5709 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-5709?

CVE-2026-5709 affects Amazon Research And Engineering Studio. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-5709?

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

Does CVE-2026-5709 have an EU (EUVD) identifier?

Yes. CVE-2026-5709 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-19550.

When was CVE-2026-5709 published?

CVE-2026-5709 was published on 2026-04-06 and last updated on 2026-07-24.

CVE-2026-5709

CVE-2026-5709 is a high-severity vulnerability in Amazon Research And Engineering Studio with a CVSS 3.x base score of 8.8. 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-78.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v4: 7.7
EPSS exploit prediction: 1% (63rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-19550
Weakness: CWE-78
Affected product: Amazon Research And Engineering Studio
Published: 2026-04-06
Last modified: 2026-07-24

Description

Unsanitized input in the FileBrowser API in AWS Research and Engineering Studio (RES) version 2024.10 through 2025.12.01 might allow a remote authenticated actor to execute arbitrary commands on the cluster-manager EC2 instance via crafted input when using the FileBrowser functionality. To remediate this issue, users are advised to upgrade to RES version 2026.03 or apply the corresponding mitigation patch to their existing environment.

Frequently asked questions

What is CVE-2026-5709?: Unsanitized input in the FileBrowser API in AWS Research and Engineering Studio (RES) version 2024.10 through 2025.12.01 might allow a remote authenticated actor to execute arbitrary commands on the cluster-manager EC2 instance via crafted input when using the FileBrowser functionality. To remediate this issue, users are advised to upgrade to RES version 2026.03 or apply the corresponding mitigation patch to their existing environment.
How severe is CVE-2026-5709?: CVE-2026-5709 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-5709 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-5709?: CVE-2026-5709 affects Amazon Research And Engineering Studio. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-5709?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-5709 have an EU (EUVD) identifier?: Yes. CVE-2026-5709 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-19550.
When was CVE-2026-5709 published?: CVE-2026-5709 was published on 2026-04-06 and last updated on 2026-07-24.

References

Affected products (1)

cpe:2.3:a:amazon:research_and_engineering_studio:*:*:*:*:*:*:*:*

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