CVE-2022-47986 — IBM Aspera Faspex Code Execution Vulnerability

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

01What is this vulnerability?

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.

02Affected products

Vendor	Product	Versions
IBM	Aspera Faspex	4.4.2 Patch Level 1 and earlier

03Active exploitation status

Yes — actively exploited. Added to the CISA KEV catalog on 2023-02-21. Ransomware use: Known.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection in your stack of choice:

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07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2023-02-17T15:46:04.120Z
• Last modified: 2025-10-21T23:15:24.899Z
• Added to CISA KEV: 2023-02-21
• BOD 22-01 due: 2023-03-14

09References

• www.ibm.com — https://www.ibm.com/support/pages/node/6952319
• exchange.xforce.ibmcloud.com — https://exchange.xforce.ibmcloud.com/vulnerabilities/243512
• packetstormsecurity.com — http://packetstormsecurity.com/files/171772/IBM-Aspera-Faspex-4.4.1-YAML-Deseria…