CVE-2021-32994 json
Softing OPC-UA C++ SDK Improper Restriction of Operations within the Bounds of a Memory Buffer
published 2022-04-04 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-19715
- cvss
- 7.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.7%
- EPSS 1.7% chance of exploitation in 30 days, percentile 77%
- public exploits
- 0
- none known
Summary
Softing OPC UA C++ SDK (Software Development Kit) versions from 5.59 to 5.64 exported library functions don't properly validate received extension objects, which may allow an attacker to crash the software by sending a variety of specially crafted packets to access several unexpected memory locations.
Patch / fix
- Softing OPC UA C++ SDK (Software Development Kit) 5.64
Vendor advisories
What the vendors themselves say about their products: affected, fixed or not affected, and what to do.
cisa ICSA-21-168-02 updated cvss 7.5
Softing OPC-UA C++ SDK
-
Softing OPC UA C++ SDK (Software Development Kit) >= 5.59, <= 5.64affected: mitigation industrial.softing.com
From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 18 mo ago
Exploit prediction
1.69% chance of exploitation in the next 30 days, higher than 77% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:N/I:N/A:P |
Affected products
- Softing OPC UA C++ SDK (Software Development Kit)
Classification
- Weakness
-
- CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer
References
-
cisa.gov
/uscert/ics/advisories/icsa-21-168-02
third-party-advisory, us-government-resource
Sources
- CVE List CVE-2021-32994
- NVD CVE-2021-32994
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