CVE-2021-3377

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

8.00% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 94.2% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

NVD analysis status

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

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

2021-03-05 19:03Z5 YR AGO

Last updated

2025-11-03 21:44Z10 MO AGO

Reserved

2021-02-01

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')Base

Data version

5.2

Document digest

6c8409de0b50b03a5479a88a2a7ece1bc79a186b41349d346636f448fddb6281

• doyensec.comhttps://doyensec.com/resources/Doyensec_Advisory_ansi_up4_XSS.pdfx_refsource_MISC
• github.comhttps://github.com/drudru/ansi_up/commit/c8c726ed1db979bae4f257b7fa41775155ba2e27x_refsource_MISC
• security.netapp.comhttps://security.netapp.com/advisory/ntap-20241108-0002/