CVE-2022-27518 (GCVE-0-2022-27518)
Vulnerability from cvelistv5 – Published: 2022-12-13 00:00 – Updated: 2025-10-21 23:15Title
Unauthenticated remote arbitrary code execution
Summary
Unauthenticated remote arbitrary code execution
Severity
9.8 (Critical)
SSVC
Exploitation: active
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2023-11-20 20:56 UTC
CWE
- CWE-664 - Improper Control of a Resource Through its Lifetime
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://support.citrix.com/article/CTX474995 | |
| https://www.cisa.gov/known-exploited-vulnerabilit… | government-resource |
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Citrix | Citrix Gateway, Citrix ADC |
Affected:
12.1
Affected: 13.0 Affected: 12.1 FIPs, NDcPP |
guessed |
CISA
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: b44a2414-c106-4db3-b40a-2f1a14ae9eb4
Exploited: Yes
Timestamps
First Seen: 2022-12-13
Asserted: 2022-12-13
Scope
Notes: KEV entry: Citrix Application Delivery Controller (ADC) and Gateway Authentication Bypass Vulnerability | Affected: Citrix / Application Delivery Controller (ADC) and Gateway | Description: Citrix Application Delivery Controller (ADC) and Gateway, when configured with SAML SP or IdP configuration, contain an authentication bypass vulnerability that allows an attacker to execute code as administrator. | Required action: Apply updates per vendor instructions. | Due date: 2023-01-03 | Known ransomware campaign use (KEV): Unknown | Notes (KEV): https://www.citrix.com/blogs/2022/12/13/critical-security-update-now-available-for-citrix-adc-citrix-gateway/; https://nvd.nist.gov/vuln/detail/CVE-2022-27518
Evidence
Type: Vendor Report
Signal: Successful Exploitation
Confidence: 80%
Source: cisa-kev
Details
| Cwes | CWE-664 |
|---|---|
| Feed | CISA Known Exploited Vulnerabilities Catalog |
| Product | Application Delivery Controller (ADC) and Gateway |
| Due Date | 2023-01-03 |
| Date Added | 2022-12-13 |
| Vendorproject | Citrix |
| Vulnerabilityname | Citrix Application Delivery Controller (ADC) and Gateway Authentication Bypass Vulnerability |
| Knownransomwarecampaignuse | Unknown |
References
Created: 2026-02-02 12:27 UTC
| Updated: 2026-02-06 07:17 UTC
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: da8116ac-d606-4348-95f9-c45971adc535
Exploited: Yes
Timestamps
First Seen: 2022-12-13
Asserted: 2022-12-13
Scope
Notes: KEVIntel entry: Unauthenticated remote arbitrary code execution | Affected: Citrix / Citrix Gateway, Citrix ADC | CVSS: 9.8 (CRITICAL) | Used in malware: unknown | Not yet in CISA KEV: False
Evidence
Type: Public Report
Signal: Successful Exploitation
Confidence: 70%
Source: kevintel
Details
| Feed | KEVIntel (kevintel.com) |
|---|---|
| Title | Unauthenticated remote arbitrary code execution |
| Vendor | Citrix |
| Product | Citrix Gateway, Citrix ADC |
| Added Date | 2022-12-13T00:00:00.000Z |
| Cvss Score | 9.8 |
| Epss Score | None |
| Cvss Severity | CRITICAL |
| Epss Percentile | None |
| Used In Malware | unknown |
| Ahead Of Cisa Kev | None |
| Not Yet In Cisa Kev | False |
References
Created: 2026-06-23 14:05 UTC
| Updated: 2026-07-10 06:14 UTC
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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.
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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.
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