CVE-2026-102820

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 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

0.19% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 8.6% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

NVD analysis status

Deferred. NVD last modified this record on 2026-09-30.

Red Hat severity

Moderate. 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

2026-09-29 18:18Z29 DAYS AGO

Last updated

2026-09-30 20:11Z28 DAYS AGO

Reserved

2026-09-29

Assigning CNA

GitHub_M

Record state

PUBLISHED

Severity

Medium (CVSS 6.2)

CNA CVSS vector

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

Weaknesses

• CWE-125Out-of-bounds ReadBase
• CWE-789Memory Allocation with Excessive Size ValueVariant

Data version

5.2

Document digest

ba5dca1612caf164fe476893e4dee604c586e4b247053d74c85d18b88760075e

• github.comhttps://github.com/Eugeny/russh/security/advisories/GHSA-g4mp-vgx3-xrvmx_refsource_CONFIRM
• github.comhttps://github.com/Eugeny/russh/commit/5d566989ebabfdebfe6b33243d31765a0812260bx_refsource_MISC
• github.comhttps://github.com/Eugeny/russh/releases/tag/v0.63.2x_refsource_MISC