CVE-2026-44420

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

• ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• 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

3.67% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 88.7% of scored records. A rank, not a probability.

NVD base score

8.8 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

NVD analysis status

Modified. NVD last modified this record on 2026-07-27.

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

2026-05-29 19:42Z3 MO AGO

Last updated

2026-07-27 12:05Z1 MO AGO

Reserved

2026-05-06

Assigning CNA

GitHub_M

Record state

PUBLISHED

Severity

High (CVSS 8.8)

CNA CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weaknesses

• CWE-122Heap-based Buffer OverflowVariant
• CWE-131Incorrect Calculation of Buffer SizeBase

Data version

5.2

Document digest

5a37538af8e5975de54302735601342ec3976225cf6c223290ad79d0bf611eb8

• github.comhttps://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-mvpx-xj7r-3p3rx_refsource_CONFIRM
• github.comhttps://github.com/yhirose/cpp-httplib/security/advisories/GHSA-h6wq-j5mv-f3q8exploit
• access.redhat.comhttps://access.redhat.com/security/cve/CVE-2026-44420vdb-entryx_refsource_REDHAT
• bugzilla.redhat.comRHBZ#2483480https://bugzilla.redhat.com/show_bug.cgi?id=2483480issue-trackingx_refsource_REDHAT
• security.access.redhat.comhttps://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44420.jsonx_sadp-csaf-vex
• access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:46393vendor-advisoryx_refsource_REDHAT
• access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:36203vendor-advisoryx_refsource_REDHAT