CVE-2026-114611

CRITICALPre-NVD 9.19.1
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

This critical-severity CVE scores 9.1 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.3% (25th percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from a secondary CVSS source
Sources: EPSS, a secondary CVSS source
Elevated

Also known asEUVD-2026-108268 (ENISA EUVD)Source: ENISA EUVD

9.1EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
CISA-KEV: Not listedEPSS PROB: 0.3%CVSS: 9.1Exploit: No code on recordExposed services: Not assessed

A fix is available — apply it.

OCO-Server is a self-hosted endpoint management application for computer inventory, software deployment, and mobile device management. Prior to 1.2.3,the Apple MDM enrollment endpoint frontend/api-mdm.php verifies the signed enrollment-request plist with openssl_pkcs7_verify(..., PKCS7_NOVERIFY, ...). PKCS7_NOVERIFY disables signer certificate chain and trust validation, so the signature only has to be self-consistent with whatever certificate is embedded in the PKCS#7 blob. A self-signed certificate from an unrelated attacker is accepted. Because the endpoint trusts the SERIAL field taken from the unverified payload, anyone who knows a registered device's serial number can sign a forged plist (SERIAL = victim device, attacker-chosen UDID) with an arbitrary self-signed certificate; POST it unauthenticated to /api-mdm.php/profile (Content-Type: application/pkcs7-signature); and receive the victim device's freshly minted MDM identity: a certificate with CN= issued by the server's internal MDM device CA, bundled with its private key in a PKCS#12 payload inside the returned .mobileconfig enrollment profile. Additionally, the victim's mobile_device database row is silently overwritten with the attacker-supplied UDID (device-record hijack). With the stolen certificate and key, the attacker can impersonate the victim device on all subsequent MDM traffic (/checkin, /mdm, /parameters), which authenticate callers by the certificate CN (the serial number) via checkSignature() in the same file. This yields control over the victim device's MDM relationship: reading its management data, replacing its push token, and disrupting or redirecting its enrollment. Version 1.2.3 fixes the issue.

CVSS v3
9.1
EG Score
9.1CRITICALmedium confidence
EG Risk
72
EG Risk 72/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity91% × 45%
Impact severity (EG Severity): CVSS 9.1 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low, Track* at medium and Attend at high mission impact.
Exploitation public PoC (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.3%
EPSS %ILE
25th
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (9.1): severity, escalated by confirmed exploitation. This CVE's 9.1 is its impact severity (EG Severity), not escalated.

EG Severity
9.1 CRITICALCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.a secondary CVSS source · CVSS v3.0 or v3.1
EG Likelihood
0.3% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-11-01). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track* at medium mission impactTrack at low, Track* at medium and Attend at high mission impact.CISA BOD 26-04: 3 days if the affected system is publicly exposed; 60 days if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at low, Track* at medium and Attend at high mission impact.

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation public PoC (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)3 days if the affected system is publicly exposed; 60 days if it is not.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable yes (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

October 22, 2026

Last Modified

October 29, 2026

Advisory Details (3)

Auto-updated Oct 22, 2026
Patch available. Sources: github, github_commit.
GitHub commit Patch Available

commit f3a6591136f9 (schorschii/OCO-Server)

Patch available: schorschii/OCO-Server v1.2.3 (contains commit f3a6591136f9)

https://github.com/schorschii/OCO-Server/commit/f3a6591136f9bd92aff39ddfb26587e6dfdb64df
GitHub commit Patch Available

commit 5cab5ad24614 (schorschii/OCO-Server)

Patch available: schorschii/OCO-Server v1.2.3 (contains commit 5cab5ad24614)

https://github.com/schorschii/OCO-Server/commit/5cab5ad2461434816d706b7be9cc08bda15c1404
GitHub advisoryMentions a patch (unverified)

MDM /profile endpoint accepts self-signed PKCS#7 signatures (PKCS7_NOVERIFY): device MDM identity (certificate + private key) disclosure and device-record hijack · Advisory · schorschii/OCO-Server · GitHub

https://github.com/schorschii/OCO-Server/security/advisories/GHSA-p549-5h7r-7639

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 16× in last 7d / 26× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

  1. 2026-11-01 22:27 UTCEG score recompute
  2. 2026-11-01 16:33 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  3. 2026-10-31 23:57 UTCEG score recompute
  4. 2026-10-31 16:32 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  5. 2026-10-31 01:27 UTCEG score recompute
  6. 2026-10-30 16:33 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  7. 2026-10-30 02:57 UTCEG score recompute
  8. 2026-10-29 16:32 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  9. 2026-10-29 04:27 UTCEG score recompute
  10. 2026-10-29 03:25 UTCEG score recompute
  11. 2026-10-29 02:37 UTCEG score recompute
  12. 2026-10-28 16:31 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  13. 2026-10-28 12:52 UTCEG score recompute
  14. 2026-10-27 16:31 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  15. 2026-10-27 14:22 UTCEG score recompute
  16. 2026-10-26 16:30 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  17. 2026-10-25 17:08 UTCEG score recompute
  18. 2026-10-25 16:32 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  19. 2026-10-25 14:50 UTCEG score recompute
  20. 2026-10-24 18:36 UTCEG score recompute
  21. 2026-10-24 16:32 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  22. 2026-10-23 16:56 UTCEG score recompute
  23. 2026-10-23 16:31 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  24. 2026-10-22 18:26 UTCEG score recompute
  25. 2026-10-22 17:47 UTCEG score recomputeFirst assessed: 9.1 CRITICAL
Show 1 more
  1. 2026-10-22 17:45 UTCMITRE cvelistV5first tracked

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Frequently asked(5)

What is CVE-2026-114611?
CVE-2026-114611 is a critical-severity vulnerability; its CVE record was published on October 22, 2026. OCO-Server is a self-hosted endpoint management application for computer inventory, software deployment, and mobile device management. Prior to 1.2.3,the Apple MDM enrollment endpoint frontend/api-mdm.php verifies the signed enrollment-request plist with openssl_pkcs7_verify(..., PKCS7_NOVERIFY,…
When was the CVE record for CVE-2026-114611 published?
The CVE record for CVE-2026-114611 was published on October 22, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of October 29, 2026; the record at its source may have been updated since.
Is CVE-2026-114611 actively exploited?
CVE-2026-114611 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (25th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-114611?
CVE-2026-114611 has a CVSS base score of 9.1 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-114611?
A fix for CVE-2026-114611 is available: update to the fixed version the vendor names in its advisory.

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