CVE-2021-31826
HighPublic PoC
Published: 27 April 2021
Published
27 April 2021
Modified
21 November 2024
KEV Added
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Patch
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CVSS Score v3.1
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS Score
0.0148
81.4th percentile
Risk Priority
16
60% EPSS · 20% KEV · 20% CVSS
Summary
CVE-2021-31826 is a high-severity NULL Pointer Dereference (CWE-476) vulnerability in Shibboleth Service Provider. Its CVSS base score is 7.5 (High).
Operationally, ranked in the top 18.6% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2021-18701
Vulnerability details
Shibboleth Service Provider 3.x before 3.2.2 is prone to a NULL pointer dereference flaw involving the session recovery feature. The flaw is exploitable (for a daemon crash) on systems not using this feature if a crafted cookie is supplied.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
shibboleth
service provider
3.0.0 — 3.2.2
Mitigating Controls
No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.