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01 Record

CVE-2020-27274

Some parsing functions in the affected product do not check the return value of malloc and the thread handling the message is forced to close, which may lead to a denial-of-service condition on the

UnratedPUBLISHEDCNA: icscert
CNA base scoreUnratedNo CNA CVSS vector
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02 Description

Some parsing functions in the affected product do not check the return value of malloc and the thread handling the message is forced to close, which may lead to a denial-of-service condition on the

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
1.16% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 66.9% 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
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.

04 Metadata

Published
2021-01-26 19:03Z5 YR AGO
Last updated
2024-08-04 16:11Z2 YR AGO
Reserved
2020-10-19
Assigning CNA
icscert
Record state
PUBLISHED
Severity
Not rated by the issuing CNA
CNA CVSS vector
Not published by the issuing CNA
Weaknesses
  • CWE-754Improper Check for Unusual or Exceptional ConditionsClass
Data version
5.1
Document digest
c838a076cf57cf9eb057602c24fcdd54f881243196b82160cf8058d48ff2686a

05 Affected products

VendorProductVersionsPlatforms
n/aOPC UA TunnellerAll versions prior to 6.3.0.8233—

06 References