CVE-2020-26572

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Source
https://cve.org/CVERecord?id=CVE-2020-26572
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-26572.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2020-26572
Downstream
AZL (1)
BELL (1)
DEBIAN (1)
MGASA (1)
OESA (1)
openSUSE (2)
RHSA (1)
RLSA (1)
SUSE (3)
UBUNTU (1)
Related
ALSA (1)
openSUSE (2)
SUSE (3)
Published
2020-10-06T02:15:13Z
Modified
2026-08-07T14:53:20Z
Severity
  • 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

The TCOS smart card software driver in OpenSC before 0.21.0-rc1 has a stack-based buffer overflow in tcos_decipher.

Database specific 
{
    "unresolved_ranges":  [
        {
            "cpes":  [
                "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*"
            ],
            "extracted_events":  [
                {
                    "introduced":  "9.0"
                },
                {
                    "last_affected":  "9.0"
                }
            ],
            "source":  "CPE_STRING",
            "vendor_product":  "debian:debian_linux"
        },
        {
            "cpes":  [
                "cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*"
            ],
            "extracted_events":  [
                {
                    "introduced":  "33"
                },
                {
                    "last_affected":  "33"
                }
            ],
            "source":  "CPE_STRING",
            "vendor_product":  "fedoraproject:fedora"
        }
    ]
}
References

Affected packages

Git / github.com/opensc/opensc

Affected ranges

Type
GIT
Repo
https://github.com/opensc/opensc
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Last Affected
45e29056ccde422e70ed3585084a7f150c632515
Fixed
9d294de90d1cc66956389856e60b6944b27b4817
Database specific
Show details 
{
    "cpe":  "cpe:2.3:a:opensc_project:opensc:*:*:*:*:*:*:*:*",
    "extracted_events":  [
        {
            "introduced":  "0"
        },
        {
            "last_affected":  "0.20.0"
        }
    ],
    "source":  [
        "CPE_RANGE",
        "REFERENCES"
    ]
}

Affected versions

0.*
0.12.2
0.12.2-rc1
0.13.0
0.13.0pre1
0.13.0rc1
0.14.0
0.14.0rc2
0.14.0rtm
0.15.0
0.16.0
0.17.0
0.17.0-rc1
0.17.0-rc2
0.18.0
0.18.0-rc1
0.18.0-rc2
0.19.0
0.19.0-rc1
0.20.0
0.20.0-rc1
0.20.0-rc2
0.20.0-rc3
0.20.0-rc4
v0.*
v0.12.2
v0.16.0-pre1

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-26572.json"
vanir_signatures 
[
    {
        "deprecated":  false,
        "digest":  {
            "line_hashes":  [
                "58466695333159636353363207331574836164",
                "202577461546426578785310313971106836046",
                "284255860012804969870862664979029655002",
                "139437758083297902526057034584382767580"
            ],
            "threshold":  0.9
        },
        "id":  "CVE-2020-26572-70cc3a8b",
        "signature_type":  "Line",
        "signature_version":  "v1",
        "source":  "https://github.com/opensc/opensc/commit/9d294de90d1cc66956389856e60b6944b27b4817",
        "target":  {
            "file":  "src/libopensc/card-tcos.c"
        }
    },
    {
        "deprecated":  false,
        "digest":  {
            "function_hash":  "114247950551260681955303043934807423823",
            "length":  1581
        },
        "id":  "CVE-2020-26572-cb06db58",
        "signature_type":  "Function",
        "signature_version":  "v1",
        "source":  "https://github.com/opensc/opensc/commit/9d294de90d1cc66956389856e60b6944b27b4817",
        "target":  {
            "file":  "src/libopensc/card-tcos.c",
            "function":  "tcos_decipher"
        }
    }
]
vanir_signatures_modified 
"2026-08-07T14:53:20Z"