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01 Record

CVE-2026-74755

Apache bRPC: Integer Underflow in mcpack2pb Parser Leading to Denial of Service

UnratedPUBLISHEDCNA: apache
CNA base scoreUnratedNo CNA CVSS vector

02 Description

Apache bRPC: Integer Underflow in mcpack2pb Parser Leading to Denial of Service

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
0.20% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 9.6% of scored records. A rank, not a probability.
NVD base score
The NVD has published no score for this record
NVD CVSS vector
No NVD score to derive
NVD analysis status
Deferred. NVD last modified this record on 2026-10-26.
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
2026-10-21 11:45Z7 DAYS AGO
Last updated
2026-10-21 11:45Z7 DAYS AGO
Reserved
2026-08-15
Assigning CNA
apache
Record state
PUBLISHED
Severity
Not rated by the issuing CNA
CNA CVSS vector
Not published by the issuing CNA
Weaknesses
  • CWE-191Integer Underflow (Wrap or Wraparound)Base
Data version
5.2
Document digest
8324b7b0b91612823f2c07a2a8bed0583742596e478455f934a9ccdc26ed5a80

05 Affected products

VendorProductVersionsPlatforms
Apache Software FoundationApache bRPC0 to < 1.18.0—

06 References