CVE-2025-65085: A Heap-based Buffer Overflow vulnerability is present in Ashlar-Vellum Cobalt, Xenon, Argon, Lithium, and Coba

Q: How do I fix CVE-2025-65085?

argon: upgrade to newer than 12.2.1204.207; cobalt: upgrade to newer than 12.2.1204.207; cobalt share: upgrade to newer than 12.2.1204.207. Exact commands for each OS are on this page.

Q: Is CVE-2025-65085 being exploited?

CVE-2025-65085 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2025-65085 affect?

CVE-2025-65085 affects argon, cobalt, cobalt share. Severity is critical (CVSS 9.8). A Heap-based Buffer Overflow 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 disclose information or execute arbitrary code.

Q: How urgent is CVE-2025-65085?

Priority 49/100. Critical severity; Remotely exploitable, no login, no user action

This month

CRITICAL 9.8REMOTEUPGRADEUPGRADEUPGRADE

CVE-2025-65085 is a critical-severity flaw (CVSS 9.8) affecting argon, cobalt, cobalt share. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A Heap-based Buffer Overflow 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 disclose information or execute arbitrary code.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.4% (top 61%)
CISA exploited list	No
Weakness	CWE-122
Published	2025-11-25
Last modified	2026-10-18

Publisher (CNA): ICS-CERT · Vendor: ashlar

Last updated 2026-10-18 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-11-25 18:15 UTCPublished CVE record published
2026-10-18 20:10 UTCUpdated Record last modified

ashlar argon UPGRADE

Affected: <= 12.2.1204.207

Fixed in: newer than 12.2.1204.207

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy argon || rpm -q argon || argon --version

2. UPGRADE to newer than 12.2.1204.207 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade argon

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade argon

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

ashlar cobalt UPGRADE

Affected: <= 12.2.1204.207

Fixed in: newer than 12.2.1204.207

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy cobalt || rpm -q cobalt || cobalt --version

2. UPGRADE to newer than 12.2.1204.207 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade cobalt

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade cobalt

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

ashlar cobalt share UPGRADE

Affected: <= 12.2.1204.207

Fixed in: newer than 12.2.1204.207

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy cobalt-share || rpm -q cobalt-share || cobalt-share --version

2. UPGRADE to newer than 12.2.1204.207 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade cobalt-share

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade cobalt-share

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

ashlar lithium UPGRADE

Affected: <= 12.2.1204.207

Fixed in: newer than 12.2.1204.207

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy lithium || rpm -q lithium || lithium --version

2. UPGRADE to newer than 12.2.1204.207 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade lithium

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade lithium

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

ashlar xenon UPGRADE

Affected: <= 12.2.1204.207

Fixed in: newer than 12.2.1204.207

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy xenon || rpm -q xenon || xenon --version

2. UPGRADE to newer than 12.2.1204.207 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade xenon

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade xenon

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-65085?

argon: upgrade to newer than 12.2.1204.207; cobalt: upgrade to newer than 12.2.1204.207; cobalt share: upgrade to newer than 12.2.1204.207. Exact commands for each OS are on this page.

Is CVE-2025-65085 being exploited?

CVE-2025-65085 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-65085 affect?

CVE-2025-65085 affects argon, cobalt, cobalt share. Severity is critical (CVSS 9.8). A Heap-based Buffer Overflow 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 disclose information or execute arbitrary code.

How urgent is CVE-2025-65085?

Priority 49/100. Critical severity; Remotely exploitable, no login, no user action

Related CVEs

CVE-2025-65084 CRITICAL 9.8 UPGRADE UPGRADE An Out-of-Bounds Write vulnerability is present in Ashlar-Vellum Cobalt, Xenon, Argon, Lithium, and Cobalt Sha
CVE-2025-65086 HIGH 7.8 UPGRADE UPGRADE An Out-of-Bounds Write vulnerability is present in Ashlar-Vellum Cobalt, Xenon, Argon, Lithium, and Cobalt Sha
CVE-2025-65087 HIGH 7.8 UPGRADE UPGRADE An Out-of-Bounds Read vulnerability is present in Ashlar-Vellum Cobalt, Xenon, Argon, Lithium, and Cobalt Shar
CVE-2025-65088 HIGH 7.8 UPGRADE UPGRADE An Out-of-Bounds Read vulnerability is present in Ashlar-Vellum Cobalt, Xenon, Argon, Lithium, and Cobalt Shar
CVE-2023-44438 HIGH 8.8 DOWNGRADE Ashlar-Vellum Argon Uncontrolled Search Path Element Remote Code Execution Vulnerability

References

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