How severe is CVE-2025-65086?

CVE-2025-65086 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-65086 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (6th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-65086?

CVE-2025-65086 primarily affects Ashlar Argon. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2025-65086?

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-2025-65086 have an EU (EUVD) identifier?

Yes. CVE-2025-65086 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-209805.

When was CVE-2025-65086 published?

CVE-2025-65086 was published on 2026-05-12 and last updated on 2026-06-17.

CVE-2025-65086

CVE-2025-65086 is a high-severity vulnerability in Ashlar Argon with a CVSS 3.x base score of 7.8. 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-787.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v4: 8.4
EPSS exploit prediction: 0% (6th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-209805
Weakness: CWE-787
Affected product: Ashlar Argon
Published: 2026-05-12
Last modified: 2026-06-17

Description

An Out-of-Bounds Write vulnerability is present in Ashlar-Vellum Cobalt, Xenon, Argon, Lithium, and Cobalt Share versions 12.6.1204.216 and prior that could allow an attacker to execute arbitrary code when a specially crafted VC6 file is being parsed.

Frequently asked questions

What is CVE-2025-65086?: An Out-of-Bounds Write vulnerability is present in Ashlar-Vellum Cobalt, Xenon, Argon, Lithium, and Cobalt Share versions 12.6.1204.216 and prior that could allow an attacker to execute arbitrary code when a specially crafted VC6 file is being parsed.
How severe is CVE-2025-65086?: CVE-2025-65086 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-65086 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (6th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-65086?: CVE-2025-65086 primarily affects Ashlar Argon. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2025-65086?: 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-2025-65086 have an EU (EUVD) identifier?: Yes. CVE-2025-65086 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-209805.
When was CVE-2025-65086 published?: CVE-2025-65086 was published on 2026-05-12 and last updated on 2026-06-17.

References

https://www.cisa.gov/news-events/ics-advisories/icsa-25-329-01

Affected products (5)

cpe:2.3:a:ashlar:argon:*:*:*:*:*:*:*:*
cpe:2.3:a:ashlar:cobalt:*:*:*:*:*:*:*:*
cpe:2.3:a:ashlar:cobalt_share:*:*:*:*:*:*:*:*
cpe:2.3:a:ashlar:lithium:*:*:*:*:*:*:*:*
cpe:2.3:a:ashlar:xenon:*:*:*:*:*:*:*:*

More vulnerabilities in Ashlar Argon

CVE-2025-65085 — Critical (CVSS 9.8): A Heap-based Buffer Overflow vulnerability is present in Ashlar-Vellum Cobalt, Xenon, Argon, Lithium, and Cobalt Share…
CVE-2025-65084 — Critical (CVSS 9.8): An Out-of-Bounds Write vulnerability is present in Ashlar-Vellum Cobalt, Xenon, Argon, Lithium, and Cobalt Share…
CVE-2023-44438 — High (CVSS 8.8): Ashlar-Vellum Argon Uncontrolled Search Path Element Remote Code Execution Vulnerability. This vulnerability allows…
CVE-2025-65088 — High (CVSS 7.8): An Out-of-Bounds Read vulnerability is present in Ashlar-Vellum Cobalt, Xenon, Argon, Lithium, and Cobalt Share…
CVE-2025-65087 — High (CVSS 7.8): An Out-of-Bounds Read vulnerability is present in Ashlar-Vellum Cobalt, Xenon, Argon, Lithium, and Cobalt Share…
CVE-2025-52584 — High (CVSS 7.8): In Ashlar-Vellum Cobalt, Xenon, Argon, Lithium, and Cobalt Share versions prior to 12.6.1204.204, the affected…

All CVEs affecting Ashlar Argon →

Other CWE-787 (Out-of-bounds Write) vulnerabilities

CVE-2026-42369 — Critical (CVSS 10.0): GV-VMS V20 is a Video Monitoring Software used to gather the feeds of many surveillance cameras and manage other…
CVE-2026-4746 — Critical (CVSS 10.0): Out-of-bounds Write vulnerability in timeplus-io proton (base/poco/Foundation/src‎ modules). This vulnerability is…
CVE-2025-43300 — Critical (CVSS 10.0): An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 15.8.5 and iPadOS…
CVE-2025-24201 — Critical (CVSS 10.0): An out-of-bounds write issue was addressed with improved checks to prevent unauthorized actions. This issue is fixed in…
CVE-2024-42479 — Critical (CVSS 10.0): llama.cpp provides LLM inference in C/C++. The unsafe `data` pointer member in the `rpc_tensor` structure can cause…
CVE-2024-39791 — Critical (CVSS 10.0): Stack-based buffer overflow vulnerabilities affecting Vonets industrial wifi bridge relays and wifi bridge…

Browse all CWE-787 (Out-of-bounds Write) vulnerabilities →