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Fencer Vulns
high 8.8

CVE-2023-49897 kev in the critical feed json

An OS command injection vulnerability exists in AE1021PE firmware version 2.0.9 and earlier and AE1021 firmware version 2.0.9 and earlier.

published 2023-12-06 2 y ago modified 2026-06-17 4 mo ago also EUVD-2023-53797

cvss
8.8
version 3.1, CNA
cisa kev
Exploited
added 2023-12-21
epss
50.4%
EPSS 50.4% chance of exploitation in 30 days, percentile 98%
public exploits
0
none known

Summary

An OS command injection vulnerability exists in AE1021PE firmware version 2.0.9 and earlier and AE1021 firmware version 2.0.9 and earlier. If this vulnerability is exploited, an arbitrary OS command may be executed by an attacker who can log in to the product.

Patch / fix

cisa required action Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

  • fxc ae1021_firmware 2.0.10
  • fxc ae1021pe_firmware 2.0.10

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-23-355-01 updated cvss 8.0

FXC AE1021/AE1021PE

  • FXC AE1021 firmware <=2.0.9 FXC AE1021PE firmware <=2.0.9
    affected: vendor fix, mitigation “FXC released the following versions to address this vulnerability:” fxc.jp

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

Timeline

  1. Published
  2. CISA SSVC: exploitation active
  3. Added to CISA KEV
  4. CISA patch deadline

Known exploited

Added
2 y ago
Patch by
2024-01-11 (2 y ago)
Ransomware
Not known
Required action
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Vendor, product
FXC, AE1021, AE1021PE
CISA name
FXC AE1021, AE1021PE OS Command Injection Vulnerability

ATT&CK techniques

How it is exploited and what it leads to, in MITRE ATT&CK terms.

  • T1203 Exploitation for Client Execution exploitation
  • T1496 Resource Hijacking primary impact
  • T1498 Network Denial of Service secondary impact

kev release 2025-07-28, att&ck v16.1. KEV to ATT&CK mappings by the MITRE Center for Threat-Informed Defense (Mappings Explorer, Apache-2.0). © 2026 The MITRE Corporation. This work is reproduced and distributed with the permission of The MITRE Corporation. Terms of use

CISA SSVC

Exploitation
Active, exploited in the wild
Automatable
no
Technical impact
total
Assessed
2 y ago

Exploit prediction

50.45% chance of exploitation in the next 30 days, higher than 98% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • akamai.com https://www.akamai.com/blog/security-research/zero-day-vulnerability-spreading-mirai-patched referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CISA ADP 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CNA 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

  • FXC Inc. AE1021PE
  • FXC Inc. AE1021

Classification

Weakness
  • CWE-78 Improper Neutralization of Special Elements used in an OS Command

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.