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01 Record

CVE-2026-47843

Reactor Netty may incorrectly route traffic due to DNS resolver reuse

LowPUBLISHEDCNA: vmware
CNA base score3.7 CVSS v3.xCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N

02 Description

Reactor Netty may incorrectly route traffic due to DNS resolver reuse

03 Exploitation and scoring

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
0.25% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 16.9% of scored records. A rank, not a probability.
NVD base score
3.7 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
NVD analysis status
Analyzed. NVD last modified this record on 2026-09-04.
Red Hat severity
Low. 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
2026-08-26 19:22Z2 MO AGO
Last updated
2026-08-26 19:45Z2 MO AGO
Reserved
2026-05-20
Assigning CNA
vmware
Record state
PUBLISHED
Severity
Low (CVSS 3.7)
CNA CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
Weaknesses
  • CWE-821Incorrect SynchronizationBase
Data version
5.2
Document digest
63422c0a785ac6f2964e319126be38e27e24f734e4ba273965b264ddc13144b8

05 Affected products

VendorProductVersionsPlatforms
SpringReactor Netty1.3.0 to 1.3.6, 1.1.0 to 1.2.18, 0 to 1.0.52—

06 References