---
id: CVE-2021-27132
title: >-
  SerComm AG Combo VD625 AGSOT_2.1.0 devices allow CRLF injection (for HTTP
  header injection) in the download function via the Content-Disposition header.
summary: >-
  SerComm AG Combo VD625 AGSOT_2.1.0 devices allow CRLF injection (for HTTP
  header injection) in the download function via the Content-Disposition header.
severity: critical
cvss: 9.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-74
vendor: sercomm
product: agcombo_vd625_firmware
affected:
  - agcombo_vd625_firmware = agsot_2.1.0
published: '2021-02-27'
updated: '2026-07-05'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2021-27132'
references:
  - url: 'https://cybertuz.com/blog/post/crlf-injection-CVE-2021-27132'
    label: cve@mitre.org
  - url: 'http://sercomm.com'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://cybertuz.com/blog/post/crlf-injection-CVE-2021-27132'
    label: af854a3a-2127-422b-91ae-364da2661108
tags:
  - nvd
  - exploit-available
epss: 0.16487
epssPercentile: 0.96881
ingestedAt: '2026-07-05T02:00:01.416Z'
exploits:
  nuclei:
    - CVE-2021-27132
  checkedAt: '2026-09-26T09:05:26.427Z'
exploitAvailable: true
---

## Overview

SerComm AG Combo VD625 AGSOT_2.1.0 devices allow CRLF injection (for HTTP header injection) in the download function via the Content-Disposition header.

## Affected

- `agcombo_vd625_firmware = agsot_2.1.0`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.