CVE-2021-22805
No exploitation reported by the sources we read.
- Published2022-02-11
- WeaknessCWE-306
Am I affected?
Debian, Ubuntu or Red Hat sometimes backport a fix without changing the upstream version number: such a version reads « to verify », never « affected ».With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.
Description
A CWE-306: Missing Authentication for Critical Function vulnerability exists that could cause deletion of arbitrary files in the context of the user running IGSS due to lack of validation of network messages. Affected Product: Interactive Graphical SCADA System Data Collector (dc.exe) (V15.0.0.21243 and prior)
Timeline
dates in UTC- 2022-02-1118:15CVE publishedNVD
Observed activity
isMalicious corpus · updated 2026-10-23 21:37 UTCBlock these indicators
- Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2021-22805?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2021-22805?format=csv
- TAXII collection of exploited CVEs
- The EDL and CSV take an API key on the Pro plan.
Versions per branch
NVD| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 15.0 | ≤ 15.0.0.21243 | no fix published | NVD |
as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.
Distribution builds and vendor advisories
Packages from OSV.dev and products from the vendors' CSAF advisories.
version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.
Vendor advisories
Schneider Electric IGSS
IGSS Data Collector (dc.exe): v15.0.0.21243 and prior
Fix
- Mitigation from the vendor CISA ICSA-21-285-03 · 1 productSchneider Electric recommends users update to Version 15.0.0.21244 of the IGSS DC module. Please note, dc.exe includes fixes for these vulnerabilities and is available for download through IGSS Master > Update IGSS Software or at the IGSS update link.
- Mitigation from the vendor CISA ICSA-21-285-03 · 1 productUsers should employ appropriate patching methodologies. Schneider Electric strongly recommends the use of backups as well as an evaluation of the impact of these patches in a test and development environment or an offline infrastructure. Contact Schneider Electric's Customer Care Center if you need…
- Mitigation from the vendor CISA ICSA-21-285-03 · 1 productIf users choose not to apply the remediation provided above, they should immediately apply the following mitigations to reduce the risk of exploit:
- Mitigation from the vendor CISA ICSA-21-285-03 · 1 productOnly accept incoming connections from machines, which names have been added as a station in the IGSS System Configuration module by setting the registry key called “MatchWinName” to 1 under: “HKEY_CURRENT_USER\SOFTWARE\SchneiderElectric\IGSS32\V15.00.00\DC_HKLM\”
- Mitigation from the vendor CISA ICSA-21-285-03 · 1 productFollow the general security recommendation below and verify devices are isolated on a private network and firewalls are configured with strict boundaries for devices that require remote access.
- Mitigation from the vendor CISA ICSA-21-285-03 · 1 productFor more information see Schneider Electric's security notification: SEVD-2021-285-03
Advisories and patches
- download.schneider-electric.comPatch · Vendor Advisory
Detection
- Nuclei template
- none so far ProjectDiscovery
- Exploit-DB
- no entry Exploit-DB
- Proof-of-concept repositories
- none listed PoC-in-GitHub
Sources
- NVDCVSS 3.19.1read 2026-10-23
- NVDCVSS 2.05read 2026-10-23
- CNAweakness (CWE)CWE-306read 2026-10-23
- FIRST EPSSEPSS score0.9 %2026-10-22
Technical details
- CVSS v3 Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
- Published
- 2022-02-11
- Last Modified
- 2026-06-17
- NVD status
- Modified
Frequently asked questions
What is CVE-2021-22805?
Is CVE-2021-22805 actively exploited?
What is the CVSS score for CVE-2021-22805?
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Related vulnerabilities
Same product first, then the same vendor advisory and the same publication week.