CVE-2021-38154 (GCVE-0-2021-38154)

Vulnerability from cvelistv5 – Published: 2021-08-29 04:59 – Updated: 2024-08-04 01:37
VLAI Shadowserver KEVIntel
Summary
Certain Canon devices manufactured in 2012 through 2020 (such as imageRUNNER ADVANCE iR-ADV C5250), when Catwalk Server is enabled for HTTP access, allow remote attackers to modify an e-mail address setting, and thus cause the device to send sensitive information through e-mail to the attacker. For example, an incoming FAX may be sent through e-mail to the attacker. This occurs when a PIN is not required for General User Mode, as exploited in the wild in August 2021.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CWE
  • n/a
Assigner
References
Shadowserver
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 8ff06bcc-bb2a-4b3c-8211-9c27155ffd78

Vulnerability ID: CVE-2021-38154

Status: Confirmed

Status Updated: 2026-07-10 00:00 UTC

Exploited: Yes

Characteristics
Severity: 75.0
Timestamps
First Seen: 2026-03-11
Asserted: 2026-03-11
Last Seen: 2026-07-10
Scope
Asset Exposure: ['internet-facing']
Notes: Affected: Canon / Canon devices (various) | Class: printer | Severity: High (CVSS 7.5) | IoT: yes | In CISA KEV: no | Honeypot connections on 2026-07-10: 17
Evidence

Type: Honeypot

Signal: In The Wild Attempts

Confidence: 70%

Source: shadowserver

Details
1D 2
Iot yes
Feed Shadowserver Foundation honeypot/exploited-vulnerabilities
Type http-scan
Class printer
7D Avg 1
Vendor Canon
30D Avg 7
90D Avg 4
Product Canon devices (various)
Cisa Kev no
Connections 17
Observation Date 2026-07-10
Vulnerability Class CVSS
Vulnerability Score 7.5
Vulnerability Severity High
References
Created: 2026-06-30 09:23 UTC | Updated: 2026-07-12 01:00 UTC
KEVIntel
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 53c88425-4693-4c73-aca6-831199bc26ea

Vulnerability ID: CVE-2021-38154

Status: Confirmed

Status Updated: 2021-08-29 04:59 UTC

Exploited: Yes

Timestamps
First Seen: 2021-08-29
Asserted: 2021-08-29
Scope
Notes: KEVIntel entry: Certain Canon devices manufactured in 2012 through 2020 (such as imageRUNNER ADVANCE iR-ADV C5250), when Catwalk Server is enabled for HTTP access,... | Affected: Canon / imageRUNNER ADVANCE iR-ADV C5250 | CVSS: 7.5 (HIGH) | EPSS: 0.04 | Used in malware: unknown | Not yet in CISA KEV: True
Evidence

Type: Public Report

Signal: Successful Exploitation

Confidence: 70%

Source: kevintel

Details
Feed KEVIntel (kevintel.com)
Title Certain Canon devices manufactured in 2012 through 2020 (such as imageRUNNER ADVANCE iR-ADV C5250), when Catwalk Server is enabled for HTTP access,...
Vendor Canon
Product imageRUNNER ADVANCE iR-ADV C5250
Added Date 2021-08-29T04:59:18.000Z
Cvss Score 7.5
Epss Score 0.04
Cvss Severity HIGH
Epss Percentile 0.89198
Used In Malware unknown
Ahead Of Cisa Kev None
Not Yet In Cisa Kev True
References
Created: 2026-06-23 14:04 UTC | Updated: 2026-07-10 06:14 UTC
Show details on NVD website
To clipboard 

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      "cve": "CVE-2021-38154",
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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.