CVE-2026-49854

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 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

0.41% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 35.9% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

NVD analysis status

Deferred. NVD last modified this record on 2026-10-24.

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

2026-07-14 20:43Z3 MO AGO

Last updated

2026-07-15 13:26Z3 MO AGO

Reserved

2026-06-01

Assigning CNA

GitHub_M

Record state

PUBLISHED

Severity

Medium (CVSS 5.3)

CNA CVSS vector

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

Weaknesses

• CWE-126Buffer Over-readVariant
• CWE-125Out-of-bounds ReadBase

Data version

5.2

Document digest

3c4ef3077a406ba562ad46493471e2d414252aa70b62c72fd98b7c69a5def066

• github.comhttps://github.com/tornadoweb/tornado/security/advisories/GHSA-cx3h-4qpv-8hc9x_refsource_CONFIRM
• github.comhttps://github.com/tornadoweb/tornado/pull/3626x_refsource_MISC
• github.comhttps://github.com/tornadoweb/tornado/commit/96dc88c2a05705287856b2cd6b4b4034f9a6aaacx_refsource_MISC
• github.comhttps://github.com/tornadoweb/tornado/releases/tag/v6.5.6x_refsource_MISC