synced 3 MIN AGO
01 Record

CVE-2026-58107

Authenticated Remote Denial of Service via Unbounded zlib Decompression in massStoreRun

MediumPUBLISHEDCNA: ERIC
CNA base score5.5 CVSS v4.0CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P/S:N/AU:Y/R:A/RE:L

02 Description

Authenticated Remote Denial of Service via Unbounded zlib Decompression in massStoreRun

03 Exploitation and scoring

Exploitation
Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.
SSVC decision
  • ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
  • 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
0.40% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 34.9% of scored records. A rank, not a probability.
NVD base score
5.5 (CVSS v4.0), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:N/AU:Y/R:A/V:X/RE:L/U:X
NVD analysis status
Deferred. NVD last modified this record on 2026-09-01.
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
2026-08-28 12:57Z2 MO AGO
Last updated
2026-08-28 18:26Z2 MO AGO
Reserved
2026-06-29
Assigning CNA
ERIC
Record state
PUBLISHED
Severity
Medium (CVSS 5.5)
CNA CVSS vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P/S:N/AU:Y/R:A/RE:L
Weaknesses
  • CWE-409Improper Handling of Highly Compressed Data (Data Amplification)Base
  • CWE-770Allocation of Resources Without Limits or ThrottlingBase
Data version
5.2
Document digest
123ed97e53685244a7aa936d1a3a5468bc3b7f5280d1a9abae7243e084b40a8c

05 Affected products

VendorProductVersionsPlatforms
EricssonCodeChecker0 to < 6.28.3—

06 References