LOW
CVE-2021-43273
CWE-125Published: November 14, 2021· Updated: Jun 17, 2026
3.3
CVSS v3.1
Official Description
An Out-of-bounds Read vulnerability exists in the DGN file reading procedure in Open Design Alliance Drawings SDK before 2022.11. Crafted data in a DGN file and lack of verification of input data can trigger a read past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of the current process.
Technical Analysis
CVE-2021-43273 requires local access, meaning attackers must already have a foothold on the target system.
Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.None
User InteractionRequired
ScopeUnchanged
Impact
ConfidentialityLow
IntegrityNone
AvailabilityNone
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
Affected Vendors & Products
opendesign1 product(s)
drawings sdk
Source: NVD CPE · 1 total CPE entries
Exploit & PoC Resources
NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.
Official Patches & Advisories
All References (10)
→
https://www.opendesign.com/security-advisoriesVendor Advisory
→
https://www.zerodayinitiative.com/advisories/ZDI-21-1281/Third Party Advisory · VDB Entry
→
https://www.zerodayinitiative.com/advisories/ZDI-21-1291/Third Party Advisory · VDB Entry
→
https://www.zerodayinitiative.com/advisories/ZDI-21-1351/Third Party Advisory · VDB Entry
→
https://www.zerodayinitiative.com/advisories/ZDI-21-1357/Third Party Advisory · VDB Entry
→
https://www.opendesign.com/security-advisoriesVendor Advisory
→
https://www.zerodayinitiative.com/advisories/ZDI-21-1281/Third Party Advisory · VDB Entry
→
https://www.zerodayinitiative.com/advisories/ZDI-21-1291/Third Party Advisory · VDB Entry
→
https://www.zerodayinitiative.com/advisories/ZDI-21-1351/Third Party Advisory · VDB Entry
→
https://www.zerodayinitiative.com/advisories/ZDI-21-1357/Third Party Advisory · VDB Entry
Quick Facts
CVE IDCVE-2021-43273
CVSS Score3.3 / 10
SeverityLOW
WeaknessCWE-125
CISA KEVNo
Affected1 vendor(s)
PublishedNov 14, 2021
Related CVEs (CWE-125)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2021-43273 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.