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Exploited vulnerability · CISA KEV

Is CVE-2023-49897 exploited? Yes: in CISA KEV since 21 Dec 2023

Gociux · FXC AE1021, AE1021PE · data: CISA KEV, CVE record, FIRST EPSS

Yes. CVE-2023-49897, FXC AE1021, AE1021PE OS Command Injection Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 21 Dec 2023, 15 days after it was published. It affects FXC AE1021, AE1021PE. If you run it, CISA's required action is: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

exploitedYesCISA KEV · 21 Dec 2023
ransomwareNot knownno confirmed use
EPSStop 5%very likely to be exploited
severity8.8CVSS 3.1 · high
US federal due11 Jan 2024BOD 22-01 deadline

What it is

FXC AE1021 and AE1021PE contain an OS command injection vulnerability that allows authenticated users to execute commands via a network.

VendorFXC (1 exploited CVE in KEV)
ProductAE1021, AE1021PE
VulnerabilityFXC AE1021, AE1021PE OS Command Injection Vulnerability
WeaknessCWE-78
Published6 Dec 2023
Added to KEV21 Dec 2023
Reported by (CNA)jpcert

What to do

  1. Check whether you run it. Look for AE1021, AE1021PE in your asset inventory, including appliances and cloud images. Stack check lists every exploited FXC CVE at once.
  2. Apply the fix. Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
  3. If you can't patch today, take the affected service off the internet or restrict who can reach it, and check its logs for signs of compromise since 6 Dec 2023.
  4. Get told next time. Email alerts when CISA adds a CVE for FXC.

References

Questions

Is CVE-2023-49897 being exploited?

Yes. CISA added CVE-2023-49897 to the Known Exploited Vulnerabilities catalog on 21 Dec 2023, which means there is reliable evidence of exploitation in the wild.

Is CVE-2023-49897 used in ransomware attacks?

CISA does not list known ransomware use for it. That can change, and exploitation alone is reason to fix it first.

How do I fix CVE-2023-49897?

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. Check FXC's advisory for the fixed versions, and if you can't patch quickly, restrict access to the affected AE1021, AE1021PE and watch it for signs of compromise.

Sources: CISA KEV (exploitation, ransomware use, required action, due date), the CVE record (publication date, CVSS, CNA), NVD and FIRST EPSS (live score). More: all KEV additions in December 2023 · act-now radar.

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