CVE-2023-31893

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

0.87% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 56.3% of scored records. A rank, not a probability.

NVD base score

7.5 (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:N/I:N/A:H

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

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

2023-06-05 00:00Z3 YR AGO

Last updated

2025-01-31 15:01Z1 YR AGO

Reserved

2023-04-29

Assigning CNA

mitre

Record state

PUBLISHED

Severity

High (CVSS 7.5)

CNA CVSS vector

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

Weaknesses

• CWE-674Uncontrolled RecursionClass

Data version

5.1

Document digest

f86d8dcc38f89302cabbcfd54d342f1b5056daab678d99b5d3fb1f7a7fba9141

• www.cert.brhttps://www.cert.br/docs/whitepapers/dns-recursivo-aberto/
• medium.comhttps://medium.com/%40shooterRX/dns-recursion-leads-to-dos-attack-vivo-play-iptv-cve-2023-31893-b5ac45f38f