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CVE-2026-58127

PACSgear MediaWriter 5.2.1 exposes a .NET Remoting TCP service on port 9000 via PacsgearMediaServerEngine.dll, registered with ObjectURIs RemoteObj and UIRemoteObj, without any authentication requirement. By exploiting the MarshalByRefObject object unmarshalling technique and implementing .NET WebClient class methods, an unauthenticated remote attacker can read and write arbitrary files on the host filesystem. The ObjectURIs are identical across all installations by default. Chaining the arbitra
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:cd3856e24dec0e2105498e0b64e0c90ce9fa0e03ba956f8e259509842dd77e75
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
2

Preserved source conflicts

No provider value was silently selected as the winner.

cvss · 2 assertions

{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":9.8,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:e27374d5442f3642af91fe541108b078d525bb72013ec3e1a4405d0354d54f98 · sha256:b141e5e1ddbc6d9d… · /containers/cna/metrics/1/cvssV3_1

{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":9.3,"baseSeverity":"CRITICAL","exploitMaturity":"NOT_DEFINED","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpac…

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:e27374d5442f3642af91fe541108b078d525bb72013ec3e1a4405d0354d54f98 · sha256:b141e5e1ddbc6d9d… · /containers/cna/metrics/0/cvssV4_0
cwe · 2 assertions

{"cweId":"CWE-306","description":"Missing Authentication for Critical Function","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:e27374d5442f3642af91fe541108b078d525bb72013ec3e1a4405d0354d54f98 · sha256:b141e5e1ddbc6d9d… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-502","description":"Deserialization of Untrusted Data","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:e27374d5442f3642af91fe541108b078d525bb72013ec3e1a4405d0354d54f98 · sha256:b141e5e1ddbc6d9d… · /containers/cna/problemTypes/0/descriptions/1

Affected products and versions

1 source assertion
{"defaultStatus":"affected","product":"PACSgear MediaWriter","vendor":"Hyland","versions":[{"status":"affected","version":"5.2.1","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e27374d5442f3642af91fe541108b078d525bb72013ec3e1a4405d0354d54f98 · sha256:b141e5e1ddbc6d9d… · /containers/cna/affected/0

Provider-owned CVSS observations

2 source assertions
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":9.8,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:e27374d5442f3642af91fe541108b078d525bb72013ec3e1a4405d0354d54f98 · sha256:b141e5e1ddbc6d9d… · /containers/cna/metrics/1/cvssV3_1
{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":9.3,"baseSeverity":"CRITICAL","exploitMaturity":"NOT_DEFINED","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpac…
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:e27374d5442f3642af91fe541108b078d525bb72013ec3e1a4405d0354d54f98 · sha256:b141e5e1ddbc6d9d… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

2 source assertions
{"cweId":"CWE-306","description":"Missing Authentication for Critical Function","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:e27374d5442f3642af91fe541108b078d525bb72013ec3e1a4405d0354d54f98 · sha256:b141e5e1ddbc6d9d… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-502","description":"Deserialization of Untrusted Data","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:e27374d5442f3642af91fe541108b078d525bb72013ec3e1a4405d0354d54f98 · sha256:b141e5e1ddbc6d9d… · /containers/cna/problemTypes/0/descriptions/1

Source references

3 source assertions
{"name":"Researcher Disclosure","tags":["technical-description","exploit"],"url":"https://gist.github.com/VAMorales/dc679ecab30b7045fa07bf3249a034d8"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e27374d5442f3642af91fe541108b078d525bb72013ec3e1a4405d0354d54f98 · sha256:b141e5e1ddbc6d9d… · /containers/cna/references/0
{"name":"Product Webpage","tags":["product"],"url":"https://www.hyland.com/en/solutions/products/pacsgear"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e27374d5442f3642af91fe541108b078d525bb72013ec3e1a4405d0354d54f98 · sha256:b141e5e1ddbc6d9d… · /containers/cna/references/1
{"tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/pacsgear-mediawriter-unauthenticated-rce-via-net-remoting-tcp-service"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e27374d5442f3642af91fe541108b078d525bb72013ec3e1a4405d0354d54f98 · sha256:b141e5e1ddbc6d9d… · /containers/cna/references/2

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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