CVE-2021-4463

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 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

1.54% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 74.8% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

Deferred. 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

2025-11-12 22:07Z11 MO AGO

Last updated

2026-05-14 02:06Z5 MO AGO

Reserved

2025-11-12

Assigning CNA

VulnCheck

Record state

PUBLISHED

Severity

High (CVSS 8.7)

CNA CVSS vector

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

Weaknesses

• CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')Base
• CWE-552Files or Directories Accessible to External PartiesBase

Data version

5.2

Document digest

a14fc3a954edd51d29d70d4ad417d530ec713f9a95b93044f66c014bc198ce9f

• www.zeroscience.mkhttps://www.zeroscience.mk/en/vulnerabilities/ZSL-2021-5657.phptechnical-descriptionexploit
• www.exploit-db.comhttps://www.exploit-db.com/exploits/50163exploit
• packetstormsecurity.comhttps://packetstormsecurity.com/files/163702exploit
• cxsecurity.comhttps://cxsecurity.com/issue/WLB-2021070173exploit
• exchange.xforce.ibmcloud.comhttps://exchange.xforce.ibmcloud.com/vulnerabilities/206477vdb-entry
• web.archive.orghttps://web.archive.org/web/20220527162453/http://www.ljkj2012.com/product
• www.vulncheck.comhttps://www.vulncheck.com/advisories/longjing-technology-bems-api-remote-arbitrary-file-downloadthird-party-advisory