MEDIUM 5.3 Microsoft PoC

CVE-2021-21707

Special characters break path parsing in XML functions

Microsoft Security Update 2021-Nov: Special characters break path parsing in XML functions

Affected Products

References

Published: 2021-11-09 · Source: Microsoft · Feed updated: 2026-08-20
This medium severity vulnerability with a CVSS score of 5.3 was published on 2021-11-09 via Microsoft. 🚨 A public proof-of-concept exploit is available on GitHub. EPSS score: 25.9% (top 2% of all CVEs by exploitation probability). Affected: cbl2 php on CBL Mariner 2.0.
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