CVE-2023-46723Network attack vector

API credential disclosure via exposed sendto.txt

Published Oct 31, 2023 · Updated Sep 5, 2024

Sensitive-data exposure in paijp lte-pic32-writer before 0.0.3 allows remote attackers to read API credentials from sendto.txt. The PHP deployment places notification-service URLs and API keys in sendto.txt without restricting HTTP access to the file. The attack requires use of sendto.txt and knowledge of the device IMEI, exposing Slack or Zulip endpoints and their API credentials.

CVSS severity8.9
High
EPSS probability0.40%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Sensitive-data exposure in paijp lte-pic32-writer before 0.0.3 allows remote attackers to read API credentials from sendto.txt. The PHP deployment places notification-service URLs and API keys in sendto.txt without restricting HTTP access to the file. The attack requires use of sendto.txt and knowledge of the device IMEI, exposing Slack or Zulip endpoints and their API credentials.

The record

CVE
CVE-2023-46723
Published
Oct 31, 2023
Updated
Sep 5, 2024
Vendor
paijp
Product
lte-pic32-writer
Classifications
CWE-538, T1552.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 31, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 5, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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

  1. Affected versionversion=<= 0.0.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

paijp · lte-pic32-writerversion=<= 0.0.1

Published CVSS scores

8.9GitHub, Inc.CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:L
7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-538Insertion of Sensitive Information into Externally-Accessible File or Directory
T1552.001Unsecured Credentials: Credentials In Files

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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