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CVE-2021-3580

HIGH
7.5
CVSS Score
Published: August 5, 2021 at 12:00 AM UTC
Updated: October 14, 2026 at 10:17 AM UTC
4 products affected across 4 vendorsDebian LinuxEnterprise LinuxONTAP Select Deploy administration utility

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Severity
HIGH7.5
Exploit prediction
EPSS 3%
SSVC
No known exploit

Description

A flaw was found in the way nettle's RSA decryption functions handled specially crafted ciphertext. An attacker could use this flaw to provide a manipulated ciphertext leading to application crash and denial of service.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Debian Linux· Debiandrupal
95%
9.0
ONTAP Select Deploy administration utility· NetApp
95%
All versions
Nettle· Nettle Project
95%
v < 3.7.33.7.3
Affected range stops below 3.7.3, so it looks safe — our inference, not a vendor statement
Enterprise Linux· Red Hatrpm
95%
7.08.0

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (5)

Issue TrackingPatchThird Party Advisory
Source: [email protected]
https://bugzilla.redhat.com/show_bug.cgi?id=1967983
Mailing ListThird Party Advisory
Source: [email protected]
https://lists.debian.org/debian-lts-announce/2021/09/msg00008.html
Vendor Advisory
Source: [email protected]
https://security.gentoo.org/glsa/202401-24
Third Party Advisory
Source: [email protected]
https://security.netapp.com/advisory/ntap-20211104-0006/
Source: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
https://cert-portal.siemens.com/productcert/html/ssa-398330.html

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGH[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-20

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