CVE-2026-6040

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.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpactpartialSuccessful exploitation gives limited 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

0.15% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 5.0% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

Deferred. NVD last modified this record on 2026-10-25.

Red Hat severity

Important. Red Hat's rating for its own products, not a CVSS rating.

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

2026-06-15 16:21Z4 MO AGO

Last updated

2026-07-23 12:08Z3 MO AGO

Reserved

2026-04-09

Assigning CNA

Document Fdn.

Record state

PUBLISHED

Severity

Medium (CVSS 5.4)

CNA CVSS vector

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

Weaknesses

• CWE-416Use After FreeVariant
• CWE-787Out-of-bounds WriteBase
• CWE-825Expired Pointer DereferenceBase

Data version

5.2

Document digest

beb0b1a756da6d1b9ab442c4821da8b3c792efd7584d0cb8b5b75e5943803344

• www.libreoffice.orghttps://www.libreoffice.org/about-us/security/advisories/cve-2026-6040
• access.redhat.comhttps://access.redhat.com/security/cve/CVE-2026-6040vdb-entryx_refsource_REDHAT
• bugzilla.redhat.comRHBZ#2488966https://bugzilla.redhat.com/show_bug.cgi?id=2488966issue-trackingx_refsource_REDHAT
• security.access.redhat.comhttps://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-6040.jsonx_sadp-csaf-vex