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Vulnerability record

CVE-2026-123975

highCVSS 4.0 8.7Published · Grid Community Forum

The short answer

CVE-2026-123975 affects Grid Community Forum Grid Community Toolkit and is rated high (CVSS 8.7). It is not in CISA's Known Exploited Vulnerabilities catalog.

What it is

Grid Community Toolkit before 6.2.20261111 (globus-gss-assist before 12.9) contains a heap out-of-bounds write in globus_gss_assist_token_get_fd() triggered by SSLv2 record lengths below 3. Remote unauthenticated clients can send a crafted GSI handshake record to services like globus-gatekeeper and myproxy to corrupt heap memory and crash the service.

Weakness: CWE-787.

Severity

8.7 high

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/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

Exploited (CISA KEV)

Not listed

CISA lists confirmed exploitation only

EPSS, next 30 days

No score

FIRST scores CVEs within a day of publication

How it can be exploited

Attack vector
Network
Attack complexity
Low
Attack requirements
None
Privileges required
None
User interaction
None
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Affected products

Grid Community Toolkit, globus-gss-assist. NVD's record lists the exact affected versions.

References

Questions

Is CVE-2026-123975 being exploited?

It is not in CISA's Known Exploited Vulnerabilities catalog as of 2026-11-13.

How do I fix CVE-2026-123975?

Follow the vendor advisory in the references below. NVD lists the affected versions under its configurations.

From NVD, CISA KEV, FIRST EPSS and OSV.dev, checked . Status on NVD: Received. The description is NVD's text, quoted as published.

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