CVE-2023-41137Network attack vector

Server impersonation via broken client encryption

Published Nov 9, 2023 · Updated Oct 28, 2024

Cryptographic error in AppsAnywhere Client allows remote authenticated users to impersonate the server via crafted network messages. The client embeds symmetric encryption that reverse engineering can recover, allowing forged server responses in the client-server protocol. Access requires a user able to interact with an affected client; successful spoofing can compromise message confidentiality, integrity and service availability.

CVSS severity9.8
Critical
EPSS probability0.34%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cryptographic error in AppsAnywhere Client allows remote authenticated users to impersonate the server via crafted network messages. The client embeds symmetric encryption that reverse engineering can recover, allowing forged server responses in the client-server protocol. Access requires a user able to interact with an affected client; successful spoofing can compromise message confidentiality, integrity and service availability.

The record

CVE
CVE-2023-41137
Published
Nov 9, 2023
Updated
Oct 28, 2024
Vendor
AppsAnywhere
Product
AppsAnywhere Client
Classifications
CWE-798, CWE-321
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 9, 2023CVE publishedPublication date reported by the CVE source.
  2. Oct 28, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.4.0
  2. Affected versionversion=1.4.1
  3. Affected versionversion=1.5.1
  4. Affected versionversion=1.5.2
  5. Affected versionversion=1.6.0
  6. Affected versionversion=2.0.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

AppsAnywhere · AppsAnywhere Clientversion=1.4.0; version=1.4.1; version=1.5.1; version=1.5.2; version=1.6.0; version=2.0.0

Published CVSS scores

8.0AppCheck Ltd.CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
9.8NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-798Use of Hard-coded Credentials
CWE-321Use of Hard-coded Cryptographic Key

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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