CVE-2022-47986
CriticalExploitedPublic exploitIBM Aspera Faspex 4.4.2 Patch Level 1 and earlier could allow a remote attacker to execute arbitrary code on the system, caused by a YAML deserialization flaw.
Published Feb 17, 2023 · Updated Oct 27, 2025
Key Facts
Patch immediately- CVE-2022-47986 is a critical-severity vulnerability (CVSS 9.8 v3.1) affecting Aspera Faspex (Ibm).
- It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Feb 13, 2023 and is known to be used in ransomware campaigns. Public exploit code is available.
- EPSS estimates a 100% probability of exploitation in the next 30 days.
- Fixed versions are available, including Aspera Faspex <=4.4.1, Aspera Faspex 4.4.1.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
CVSS v3.1
9.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
100%
Higher than 99.9% of all scored CVEs
Exploited in the wild
Yes
4 catalog listings, used by ransomware
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2022-47986 brief as a PDF
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Description
IBM Aspera Faspex 4.4.2 Patch Level 1 and earlier could allow a remote attacker to execute arbitrary code on the system, caused by a YAML deserialization flaw. By sending a specially crafted obsolete API call, an attacker could exploit this vulnerability to execute arbitrary code on the system. The obsolete API call was removed in Faspex 4.4.2 PL2. IBM X-Force ID: 243512.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| CISA KEV | Feb 21, 2023 | Mar 14, 2023 | Known |
| Industry KEV feed | Feb 13, 2023 | Mar 14, 2023 | Known |
| CIRCL KEV | Feb 21, 2023 | Mar 14, 2023 | Known |
| ENISA EUVD | Feb 21, 2023 | n/a | Not reported |
Required action: Apply updates per vendor instructions.
Affected Products
4 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Aspera FaspexIbm | 4.4.2, 4.4.2-patch_level_1, >= 4.4.2 Patch Level 1 and earlier | 4.4.1 |
Patched Releases
Aspera Faspex
<=4.4.1
Timeline
Added to Industry KEV feed
Feb 13, 2023
Publicly disclosed
Feb 17, 2023
Added to CISA KEV
Feb 21, 2023
Added to CIRCL KEV
Feb 21, 2023
Added to ENISA EUVD
Feb 21, 2023
Last updated
Oct 27, 2025
Weakness Type
- CWE-502 Deserialization of Untrusted Data
References
- advisoryhttp://packetstormsecurity.com/files/171772/IBM-Aspera-Faspex-4.4.1-YAML-Deserialization.html
- advisoryhttps://exchange.xforce.ibmcloud.com/vulnerabilities/243512
- patchhttps://www.ibm.com/support/pages/node/6952319
- exploitVulnCheck exploitation report
- exploitVulnCheck exploitation report
FAQ
Common Questions.
IBM Aspera Faspex 4.4.2 Patch Level 1 and earlier could allow a remote attacker to execute arbitrary code on the system, caused by a YAML deserialization flaw.
Affected: Aspera Faspex (Ibm) versions 4.4.2, 4.4.2-patch_level_1, >= 4.4.2 Patch Level 1 and earlier. The full list is in the CVE brief.
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Feb 13, 2023 and is known to be used in ransomware campaigns.
Yes. It was added on Feb 21, 2023 with a federal remediation due date of Mar 14, 2023.
Public exploit code is available.
Fixed versions are available, including Aspera Faspex <=4.4.1, Aspera Faspex 4.4.1.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
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