CVE-2021-22753
No exploitation reported by the sources we read.
- Published2021-06-11
- WeaknessCWE-125
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-125: Out-of-bounds read vulnerability exists inIGSS Definition (Def.exe) V15.0.0.21140 and prior that could result in loss of data or remote code execution due to missing length checks, when a malicious WSP file is being parsed by IGSS Definition.
Timeline
dates in UTC- 2021-06-1116:15CVE 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-2021-22753?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2021-22753?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 | ≤ 15.0.0.21140 | 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 Definition (Def.exe): v15.0.0.21140 and prior
Fix
- Mitigation from the vendor CISA ICSA-21-159-04 · 1 productSchneider Electric recommends users update to Version 15.0.0.21141 of the IGSS Definition module: Def.exe includes fixes for these vulnerabilities and is available for download through IGSS Master > Update IGSS Software, or at the link above.
- Mitigation from the vendor CISA ICSA-21-159-04 · 1 productIf users choose not to apply the remediation provided above, they should immediately apply the following mitigations to reduce the risk of exploitation:
- Mitigation from the vendor CISA ICSA-21-159-04 · 1 productAvoid importing CGF and WSP files from untrusted sources.
- Mitigation from the vendor CISA ICSA-21-159-04 · 1 productPlease see Schneider Electric's publication SEVD-2021-159-01 for more information.
Advisories and patches
- download.schneider-electric.comVendor 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 3.17.8read 2026-10-23
- NVDCVSS 2.06.8read 2026-10-23
- CNAweakness (CWE)CWE-125read 2026-10-23
- FIRST EPSSEPSS score1.2 %2026-10-22
Technical details
- CVSS v3 Vector
- CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Published
- 2021-06-11
- Last Modified
- 2026-06-17
- NVD status
- Modified
Frequently asked questions
What is CVE-2021-22753?
Is CVE-2021-22753 actively exploited?
What is the CVSS score for CVE-2021-22753?
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