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01 Record

CVE-2021-30639

DoS after non-blocking IO error

UnratedPUBLISHEDCNA: apache
CNA base scoreUnratedNo CNA CVSS vector
View raw JSON

02 Description

DoS after non-blocking IO error

03 Exploitation and scoring

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
6.88% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 93.9% 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
Important. 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.

04 Metadata

Published
2021-07-12 14:55Z5 YR AGO
Last updated
2024-08-03 22:40Z2 YR AGO
Reserved
2021-04-13
Assigning CNA
apache
Record state
PUBLISHED
Severity
Not rated by the issuing CNA
CNA CVSS vector
Not published by the issuing CNA
Weaknesses
  • CWE-755Improper Handling of Exceptional ConditionsClass
  • CWE-459Incomplete CleanupBase
Data version
5.1
Document digest
e0143034c2e23b705ef2c4eca9081b2ae2c6b6e6a58027585a0e4f7785ede89d

05 Affected products

VendorProductVersionsPlatforms
Apache Software FoundationApache TomcatApache Tomcat 10 10.0.3 to 10.0.4, Apache Tomcat 9 9.0.44, Apache Tomcat 8.5 8.5.64—

06 References