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CVE-2026-23759

Perle IOLAN STS/SCS terminal server models with firmware versions prior to 6.0 allow authenticated OS command injection via the restricted shell accessed over Telnet or SSH. The shell 'ps' command does not perform proper argument sanitization and passes user-supplied parameters into an 'sh -c' invocation running as root. An authenticated attacker who can log in to the device can inject shell metacharacters after the 'ps' subcommand to execute arbitrary OS commands with root privileges, leading t
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:6ec4ad3f7e8ccb4d26a1011fb6e4bf84cd041a0a04690d75aa9fe6d1ba515a49
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
2

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 2 assertions

{"defaultStatus":"unaffected","product":"IOLAN SCS","vendor":"Perle Systems","versions":[{"lessThan":"6.0","status":"affected","version":"0","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:07cff687864c337287700dc2df38a3f33138e9ec026e6ea49921d6d337e7c906 · sha256:7438e9f434dbb864… · /containers/cna/affected/1

{"defaultStatus":"unaffected","product":"IOLAN STS","vendor":"Perle Systems","versions":[{"lessThan":"6.0","status":"affected","version":"0","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:07cff687864c337287700dc2df38a3f33138e9ec026e6ea49921d6d337e7c906 · sha256:7438e9f434dbb864… · /containers/cna/affected/0
cvss · 2 assertions

{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.2,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"HIGH","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:H/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:v2:07cff687864c337287700dc2df38a3f33138e9ec026e6ea49921d6d337e7c906 · sha256:7438e9f434dbb864… · /containers/cna/metrics/1/cvssV3_1

{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":8.6,"baseSeverity":"HIGH","exploitMaturity":"NOT_DEFINED","privilegesRequired":"HIGH","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:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"…

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:07cff687864c337287700dc2df38a3f33138e9ec026e6ea49921d6d337e7c906 · sha256:7438e9f434dbb864… · /containers/cna/metrics/0/cvssV4_0

Affected products and versions

2 source assertions
{"defaultStatus":"unaffected","product":"IOLAN SCS","vendor":"Perle Systems","versions":[{"lessThan":"6.0","status":"affected","version":"0","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:07cff687864c337287700dc2df38a3f33138e9ec026e6ea49921d6d337e7c906 · sha256:7438e9f434dbb864… · /containers/cna/affected/1
{"defaultStatus":"unaffected","product":"IOLAN STS","vendor":"Perle Systems","versions":[{"lessThan":"6.0","status":"affected","version":"0","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:07cff687864c337287700dc2df38a3f33138e9ec026e6ea49921d6d337e7c906 · sha256:7438e9f434dbb864… · /containers/cna/affected/0

Provider-owned CVSS observations

2 source assertions
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.2,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"HIGH","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:H/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:v2:07cff687864c337287700dc2df38a3f33138e9ec026e6ea49921d6d337e7c906 · sha256:7438e9f434dbb864… · /containers/cna/metrics/1/cvssV3_1
{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":8.6,"baseSeverity":"HIGH","exploitMaturity":"NOT_DEFINED","privilegesRequired":"HIGH","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:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"…
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:07cff687864c337287700dc2df38a3f33138e9ec026e6ea49921d6d337e7c906 · sha256:7438e9f434dbb864… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion
{"cweId":"CWE-78","description":"CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:07cff687864c337287700dc2df38a3f33138e9ec026e6ea49921d6d337e7c906 · sha256:7438e9f434dbb864… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions
{"tags":["product"],"url":"https://www.perle.com/downloads/server_sds_sts_rackmount.shtml"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:07cff687864c337287700dc2df38a3f33138e9ec026e6ea49921d6d337e7c906 · sha256:7438e9f434dbb864… · /containers/cna/references/0
{"tags":["product"],"url":"https://www.perle.com/support_services/documentation_pdfs/iolan_scs-sds-sts_ug.pdf"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:07cff687864c337287700dc2df38a3f33138e9ec026e6ea49921d6d337e7c906 · sha256:7438e9f434dbb864… · /containers/cna/references/1
{"tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/perle-iolan-sts-scs-authenticated-command-injection-via-shell-ps"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:07cff687864c337287700dc2df38a3f33138e9ec026e6ea49921d6d337e7c906 · sha256:7438e9f434dbb864… · /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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