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CVE-2020-28407

In swtpm before 0.4.2 and 0.5.x before 0.5.1, a local attacker may be able to overwrite arbitrary...

7.1 HighFix available

In swtpm before 0.4.2 and 0.5.x before 0.5.1, a local attacker may be able to overwrite arbitrary files via a symlink attack against a temporary file such as TMP2-00.permall.

Attack profile

How easy it is to exploit

Attack vector
Local
Complexity
Low
Privileges needed
Low
User interaction
None

What an attacker can affect

Confidentiality
None
Integrity
High
Availability
High

Exploit likelihood

0.28%Up 0.2 points since Nov 3, 2023
90%50%10%1%

What each source reports

NVD Score used 7.1

In swtpm before 0.4.2 and 0.5.x before 0.5.1, a local attacker may be able to overwrite arbitrary files via a symlink attack against a temporary file such as TMP2-00.permall.

Record
CVE-2020-28407
CVSS 3.1
7.1 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
Weakness
CWE-59
Updated
2026-11-02
CVE List No score

In swtpm before 0.4.2 and 0.5.x before 0.5.1, a local attacker may be able to overwrite arbitrary files via a symlink attack against a temporary file such as TMP2-00.permall.

Record
CVE-2020-28407
Updated
2026-11-02
EUVDEUVD-2020-20866 No score

In swtpm before 0.4.2 and 0.5.x before 0.5.1, a local attacker may be able to overwrite arbitrary files via a symlink attack against a temporary file such as TMP2-00.permall.

Record
EUVD-2020-20866
Updated
2026-11-03
GitHub AdvisoriesGHSA-52x8-2f4w-q8mm 7.1

In swtpm before 0.4.2 and 0.5.x before 0.5.1, a local attacker may be able to overwrite arbitrary...

In swtpm before 0.4.2 and 0.5.x before 0.5.1, a local attacker may be able to overwrite arbitrary files via a symlink attack against a temporary file such as TMP2-00.permall.

Record
GHSA-52x8-2f4w-q8mm
CVSS 3.1
7.1 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
Weakness
CWE-59
Updated
2026-11-02
OSV 7.1

In swtpm before 0.4.2 and 0.5.x before 0.5.1, a local attacker may be able to overwrite arbitrary files via a symlink attack against a temporary file such as TMP2-00.permall.

Record
CVE-2020-28407
CVSS 3.1
7.1 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
Updated
2026-11-02
OSVOESA-2022-1741 8.2

swtpm security update

TPM emulator built on libtpms providing TPM functionality for QEMU VMs

Security Fix(es):

** RESERVED ** This candidate has been reserved by an organization or individual that will use it when announcing a new security problem. When the candidate has been publicized, the details for this candidate will be provided.(CVE-2020-28407)

Record
OESA-2022-1741
CVSS 3.1
8.2 HighCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Updated
2026-11-02
OSVUBUNTU-CVE-2020-28407 7.1

In swtpm before 0.4.2 and 0.5.x before 0.5.1, a local attacker may be able to overwrite arbitrary files via a symlink attack against a temporary file such as TMP2-00.permall.

Record
UBUNTU-CVE-2020-28407
CVSS 3.1
7.1 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
Updated
2026-11-02
OSVopenSUSE-SU-2024:11416-1 No score

swtpm-0.6.1-1.1 on GA media

These are all security issues fixed in the swtpm-0.6.1-1.1 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2024:11416-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
swtpm
openEuler:20.03-LTS-SP1
before 0.3.3-5.oe1
0.3.3-5.oe1
swtpm
openEuler:20.03-LTS-SP3
before 0.3.3-5.oe1
0.3.3-5.oe1
swtpm
openEuler:22.03-LTS
before 0.3.3-6.oe2203
0.3.3-6.oe2203
swtpm
openSUSE:Tumbleweed
before 0.6.1-1.1
0.6.1-1.1

History

History
RecordedChangedSources
affected
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2020-28407 is a high vulnerability (CVSS 7.1) in Swtpm Project Swtpm, published July 8, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.28%, the 20th percentile. Fixed in swtpm 0.3.3-5.oe1.

References

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