CVE-2023-53979

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 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

0.81% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 56.6% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

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

2025-12-22 21:35Z10 MO AGO

Last updated

2026-03-05 12:03Z7 MO AGO

Reserved

2025-12-20

Assigning CNA

VulnCheck

Record state

PUBLISHED

Severity

High (CVSS 8.6)

CNA CVSS vector

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

Weaknesses

• CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')Base

Data version

5.2

Document digest

61d3c6bce4af5f426e6cefc1b9fe210e897552a7b4556a7ad619979b8363f9f5

• www.exploit-db.comExploitDB-51213https://www.exploit-db.com/exploits/51213exploit
• mybb.comOfficial MyBB Vendor Homepagehttps://mybb.com/product
• fdlucifer.github.ioResearcher Disclosurehttps://fdlucifer.github.io/2023/01/17/mybb1-8-32-LFI-RCE/technical-description
• www.vulncheck.comVulnCheck Advisory: MyBB 1.8.32 Authenticated Remote Code Execution via Chained Vulnerabilitieshttps://www.vulncheck.com/advisories/mybb-authenticated-remote-code-execution-via-chained-vulnerabilitiesthird-party-advisory
• www.cve.orghttps://www.cve.org/CVERecord?id=CVE-2022-45867