CVE catalog
CVE-2021-41500
cvxopt: CVE-2021-41500
- Severity
- Medium
- Published
- Source
- [NVD] · [CVE record]
- EPSS
- 1.19% · Oct 25, 2026
Incomplete string comparison vulnerability exits in cvxopt.org cvxop <= 1.2.6 in APIs (cvxopt.cholmod.diag, cvxopt.cholmod.getfactor, cvxopt.cholmod.solve, cvxopt.cholmod.spsolve), which allows attackers to conduct Denial of Service attacks by construct fake Capsule objects.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | cvxopt | sid | 1.3.2+dfsg-2 | fixed |
| Debian | cvxopt | forky | 1.3.2+dfsg-2 | fixed |
| Debian | cvxopt | trixie | 1.3.0+dfsg-1 | fixed |
| Debian | cvxopt | bookworm | 1.3.0+dfsg-1 | fixed |
| Ubuntu | cvxopt | 14.04 | 1.1.4-1 | vulnerable |
| Ubuntu | cvxopt | 14.04 | 1.1.4-1.1 | vulnerable |
| Ubuntu | cvxopt | 14.04 | 1.1.4-1.2 | vulnerable |
| Ubuntu | cvxopt | 16.04 | 1.1.4-1.3 | vulnerable |
| Ubuntu | cvxopt | 16.04 | 1.1.4-1.3build1 | vulnerable |
| Ubuntu | cvxopt | 16.04 | 1.1.4-1.3build2 | vulnerable |
| Ubuntu | cvxopt | 16.04 | 1.1.4-1.4 | vulnerable |
| Ubuntu | cvxopt | 18.04 | 1.1.9+dfsg-2 | vulnerable |
| Ubuntu | cvxopt | 18.04 | 1.1.9+dfsg-2build1 | vulnerable |
| Ubuntu | cvxopt | 20.04 | 1.1.9+dfsg-3build2 | vulnerable |
| Ubuntu | cvxopt | 20.04 | 1.2.3+dfsg-1ubuntu1 | vulnerable |
| Ubuntu | cvxopt | 20.04 | 1.2.3+dfsg-2 | vulnerable |
| Ubuntu | cvxopt | 20.04 | 1.2.3+dfsg-2build1 | vulnerable |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | cvxopt | source | sid | 1.2.7+dfsg-1 | not yet assigned | Not reported | Not reported |
| Debian | cvxopt | source | forky | 1.2.7+dfsg-1 | not yet assigned | Not reported | Not reported |
| Debian | cvxopt | source | trixie | 1.2.7+dfsg-1 | not yet assigned | Not reported | Not reported |
| Debian | cvxopt | source | bookworm | 1.2.7+dfsg-1 | not yet assigned | Not reported | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [python3-cvxopt]Fixed
Source package: [cvxopt]
Details (2)
1.3.0+dfsg-1+b1· amd64 · bookwormFixed · Fixed:
1.2.7+dfsg-1dsa · cvxopt · debian · bookworm; dsa · cvxopt · debian · 12
1.3.0+dfsg-1+b1· arm64 · bookwormFixed · Fixed:
1.2.7+dfsg-1dsa · cvxopt · debian · bookworm; dsa · cvxopt · debian · 12
- [python-cvxopt-doc]Fixed
Source package: [cvxopt]
Details (2)
1.3.0+dfsg-1· all · bookwormFixed · Fixed:
1.2.7+dfsg-1dsa · cvxopt · debian · bookworm; dsa · cvxopt · debian · 12
1.3.0+dfsg-1· all · bookwormFixed · Fixed:
1.2.7+dfsg-1dsa · cvxopt · debian · bookworm; dsa · cvxopt · debian · 12
[Debian 13 (Trixie)]
- [python3-cvxopt]Fixed
Source package: [cvxopt]
Details (2)
1.3.0+dfsg-1+b9· amd64 · trixieFixed · Fixed:
1.2.7+dfsg-1dsa · cvxopt · debian · 13
1.3.0+dfsg-1+b9· arm64 · trixieFixed · Fixed:
1.2.7+dfsg-1dsa · cvxopt · debian · 13
- [python-cvxopt-doc]Fixed
Source package: [cvxopt]
Details (2)
1.3.0+dfsg-1· all · trixieFixed · Fixed:
1.2.7+dfsg-1dsa · cvxopt · debian · 13
1.3.0+dfsg-1· all · trixieFixed · Fixed:
1.2.7+dfsg-1dsa · cvxopt · debian · 13
Observed: