CVE-2021-33589
Ribose RNP before 0.15.1 does not implement a required step in a cryptographic algorithm,...
Ribose RNP before 0.15.1 does not implement a required step in a cryptographic algorithm, resulting in weaker encryption than on the tin of the algorithm.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
Ribose RNP before 0.15.1 does not implement a required step in a cryptographic algorithm, resulting in weaker encryption than on the tin of the algorithm.
- Record
CVE-2021-33589- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-522
- Updated
- 2026-11-02
CVE List
Ribose RNP before 0.15.1 does not implement a required step in a cryptographic algorithm, resulting in weaker encryption than on the tin of the algorithm.
- Record
CVE-2021-33589- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-522
- Updated
- 2026-11-02
EUVDEUVD-2021-20274
Ribose RNP before 0.15.1 does not implement a required step in a cryptographic algorithm, resulting in weaker encryption than on the tin of the algorithm.
- Record
EUVD-2021-20274- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-85rv-559q-9c4r
Ribose RNP before 0.15.1 does not implement a required step in a cryptographic algorithm,...
Ribose RNP before 0.15.1 does not implement a required step in a cryptographic algorithm, resulting in weaker encryption than on the tin of the algorithm.
- Record
GHSA-85rv-559q-9c4r- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-522
- Updated
- 2026-11-02
OSV
Ribose RNP before 0.15.1 does not implement a required step in a cryptographic algorithm, resulting in weaker encryption than on the tin of the algorithm.
- Record
CVE-2021-33589- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - Updated
- 2026-11-02
OSVDEBIAN-CVE-2021-33589
Ribose RNP before 0.15.1 does not implement a required step in a cryptographic algorithm, resulting in weaker encryption than on the tin of the algorithm.
- Record
DEBIAN-CVE-2021-33589- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - Updated
- 2026-11-02
OSVUBUNTU-CVE-2021-33589
Ribose RNP before 0.15.1 does not implement a required step in a cryptographic algorithm, resulting in weaker encryption than on the tin of the algorithm.
- Record
UBUNTU-CVE-2021-33589- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - Updated
- 2026-11-02
OSVopenSUSE-SU-2024:11302-1 No score
librnp0-0.15.2-1.2 on GA media
These are all security issues fixed in the librnp0-0.15.2-1.2 package on the GA media of openSUSE Tumbleweed.
- Record
openSUSE-SU-2024:11302-1- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
rnpDebian:12 |
before 0.15.1-1 | 0.15.1-1 |
rnpDebian:13 |
before 0.15.1-1 | 0.15.1-1 |
rnpDebian:14 |
before 0.15.1-1 | 0.15.1-1 |
rnpUbuntu:22.04:LTS |
All versions, plus listed versions 0.14.0-60.15.2-6build1 |
None known |
rnpUbuntu:24.04:LTS |
All versions, plus listed versions 0.17.0-3 |
None known |
rnpUbuntu:25.10 |
All versions, plus listed versions 0.17.1-1 |
None known |
rnpUbuntu:26.10 |
All versions, plus listed versions 0.18.1-1build10.18.1-1.10.18.1-1.1build1 |
None known |
rnpUbuntu:26.04:LTS |
All versions, plus listed versions 0.17.1-10.18.0-40.18.1-10.18.1-1build1 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-33589 is a high vulnerability (CVSS 7.5) in Ribose Rnp, published April 21, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.49%, the 42nd percentile. Fixed in rnp 0.15.1-1.
References
ribose.com/feedback/security
open.ribose.com/advisories/ra-2021-05-30
nvd.nist.gov/vuln/detail/CVE-2021-33589
github.com/advisories/GHSA-85rv-559q-9c4r
security-tracker.debian.org/tracker/CVE-2021-33589
ubuntu.com/security/CVE-2021-33589
cve.org/CVERecord?id=CVE-2021-33589
suse.com/security/cve/CVE-2021-33589