CVE-2025-20124 (GCVE-0-2025-20124)
Vulnerability from cvelistv5 – Published: 2025-02-05 16:12 – Updated: 2026-02-26 19:09
VLAI
EPSS
VEX
Title
Cisco Identity Services Engine Java Deserialization Vulnerability
Summary
A vulnerability in an API of Cisco ISE could allow an authenticated, remote attacker to execute arbitrary commands as the root user on an affected device.
This vulnerability is due to insecure deserialization of user-supplied Java byte streams by the affected software. An attacker could exploit this vulnerability by sending a crafted serialized Java object to an affected API. A successful exploit could allow the attacker to execute arbitrary commands on the device and elevate privileges.
Note: To successfully exploit this vulnerability, the attacker must have valid read-only administrative credentials. In a single-node deployment, new devices will not be able to authenticate during the reload time.
Severity
9.9 (Critical)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-02-07 04:55 UTC
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
References
1 reference
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Cisco | Cisco Identity Services Engine Software |
Affected:
3.0.0
Affected: 3.0.0 p1 Affected: 3.0.0 p2 Affected: 3.0.0 p3 Affected: 3.1.0 Affected: 3.0.0 p4 Affected: 3.1.0 p1 Affected: 3.0.0 p5 Affected: 3.1.0 p3 Affected: 3.1.0 p2 Affected: 3.0.0 p6 Affected: 3.2.0 Affected: 3.1.0 p4 Affected: 2.7.0 p8 Affected: 3.1.0 p5 Affected: 3.2.0 p1 Affected: 3.0.0 p7 Affected: 3.1.0 p6 Affected: 3.2.0 p2 Affected: 3.1.0 p7 Affected: 3.3.0 Affected: 3.2.0 p3 Affected: 3.0.0 p8 Affected: 3.2.0 p4 Affected: 3.1.0 p8 Affected: 3.2.0 p5 Affected: 3.2.0 p6 Affected: 3.1.0 p9 Affected: 3.3 Patch 2 Affected: 3.3 Patch 1 Affected: 3.3 Patch 3 |
guessed | |
| Cisco | Cisco ISE Passive Identity Connector |
Affected:
3.0.0
Affected: 3.2.0 Affected: 3.1.0 Affected: 3.3.0 |
guessed |
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"version": "3.0.0"
},
{
"status": "affected",
"version": "3.0.0 p1"
},
{
"status": "affected",
"version": "3.0.0 p2"
},
{
"status": "affected",
"version": "3.0.0 p3"
},
{
"status": "affected",
"version": "3.1.0"
},
{
"status": "affected",
"version": "3.0.0 p4"
},
{
"status": "affected",
"version": "3.1.0 p1"
},
{
"status": "affected",
"version": "3.0.0 p5"
},
{
"status": "affected",
"version": "3.1.0 p3"
},
{
"status": "affected",
"version": "3.1.0 p2"
},
{
"status": "affected",
"version": "3.0.0 p6"
},
{
"status": "affected",
"version": "3.2.0"
},
{
"status": "affected",
"version": "3.1.0 p4"
},
{
"status": "affected",
"version": "2.7.0 p8"
},
{
"status": "affected",
"version": "3.1.0 p5"
},
{
"status": "affected",
"version": "3.2.0 p1"
},
{
"status": "affected",
"version": "3.0.0 p7"
},
{
"status": "affected",
"version": "3.1.0 p6"
},
{
"status": "affected",
"version": "3.2.0 p2"
},
{
"status": "affected",
"version": "3.1.0 p7"
},
{
"status": "affected",
"version": "3.3.0"
},
{
"status": "affected",
"version": "3.2.0 p3"
},
{
"status": "affected",
"version": "3.0.0 p8"
},
{
"status": "affected",
"version": "3.2.0 p4"
},
{
"status": "affected",
"version": "3.1.0 p8"
},
{
"status": "affected",
"version": "3.2.0 p5"
},
{
"status": "affected",
"version": "3.2.0 p6"
},
{
"status": "affected",
"version": "3.1.0 p9"
},
{
"status": "affected",
"version": "3.3 Patch 2"
},
{
"status": "affected",
"version": "3.3 Patch 1"
},
{
"status": "affected",
"version": "3.3 Patch 3"
}
]
},
{
"defaultStatus": "unknown",
"product": "Cisco ISE Passive Identity Connector",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "3.0.0"
},
{
"status": "affected",
"version": "3.2.0"
},
{
"status": "affected",
"version": "3.1.0"
},
{
"status": "affected",
"version": "3.3.0"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "A vulnerability in an API of Cisco ISE could allow an authenticated, remote attacker to execute arbitrary commands as the root user on an affected device.\r\n\r\nThis vulnerability is due to insecure deserialization of user-supplied Java byte streams by the affected software. An attacker could exploit this vulnerability by sending a crafted serialized Java object to an affected API. A successful exploit could allow the attacker to execute arbitrary commands on the device and elevate privileges.\r\nNote:\u0026nbsp;To successfully exploit this vulnerability, the attacker must have valid read-only administrative credentials. In a single-node deployment, new devices will not be able to authenticate during the reload time."
}
],
"exploits": [
{
"lang": "en",
"value": "The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerabilities that are described in this advisory."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 9.9,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "LOW",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:H",
"version": "3.1"
},
"format": "cvssV3_1"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-502",
"description": "Deserialization of Untrusted Data",
"lang": "en",
"type": "cwe"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2025-02-05T16:12:07.999Z",
"orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"shortName": "cisco"
},
"references": [
{
"name": "cisco-sa-ise-multivuls-FTW9AOXF",
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-multivuls-FTW9AOXF"
}
],
"source": {
"advisory": "cisco-sa-ise-multivuls-FTW9AOXF",
"defects": [
"CSCwk14916"
],
"discovery": "EXTERNAL"
},
"title": "Cisco Identity Services Engine Java Deserialization Vulnerability"
}
},
"cveMetadata": {
"assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"assignerShortName": "cisco",
"cveId": "CVE-2025-20124",
"datePublished": "2025-02-05T16:12:07.999Z",
"dateReserved": "2024-10-10T19:15:13.211Z",
"dateUpdated": "2026-02-26T19:09:23.629Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
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Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Vulnerability timeline
Sightings and recorded dates, grouped by day · UTC
How durations are calculated
Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.
Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.