CVE-2026-25550

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

• ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
• AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
• Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.88% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 58.8% of scored records. A rank, not a probability.

NVD base score

9.3 (CVSS v4.0), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

NVD analysis status

Awaiting Analysis. NVD last modified this record on 2026-09-16.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2026-06-04 17:13Z4 MO AGO

Last updated

2026-09-16 15:03Z1 MO AGO

Reserved

2026-02-02

Assigning CNA

VulnCheck

Record state

PUBLISHED

Severity

Critical (CVSS 9.3)

CNA CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Weaknesses

• CWE-306Missing Authentication for Critical FunctionBase
• CWE-502Deserialization of Untrusted DataBase

Data version

5.2

Document digest

d41f9d1e5c60ac17d08ddfdbb75877e6430bc55087b92c08f556af0df34e3a39

• trust.seagullsoftware.comVendor Advisoryhttps://trust.seagullsoftware.com/?tcuUid=55ed135f-683c-4e9b-a59d-7d4373c0ac7evendor-advisorypatch
• gist.github.comResearcher Disclosurehttps://gist.github.com/VAMorales/dde5b1c0415a8505ccd6fafdb095a618technical-descriptionexploit
• portal.seagullscientific.comProduct Pagehttps://portal.seagullscientific.com/downloads/bartenderproduct
• www.vulncheck.comhttps://www.vulncheck.com/advisories/seagull-software-bartender-unauthenticated-rce-via-net-remoting-servicethird-party-advisory