CVE-2020-13431: I2P before 0.9.46 allows local users to gain privileges via a Trojan horse I2PSvc.exe file because of weak per

Q: How do I fix CVE-2020-13431?

i2p: upgrade to 0.9.46. Exact commands for each OS are on this page.

Q: Is CVE-2020-13431 being exploited?

CVE-2020-13431 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2020-13431 affect?

CVE-2020-13431 affects i2p. Severity is high (CVSS 7.8). I2P before 0.9.46 allows local users to gain privileges via a Trojan horse I2PSvc.exe file because of weak permissions on a certain %PROGRAMFILES% subdirectory.

Routine

HIGH 7.8UPGRADE

CVE-2020-13431 is a high-severity flaw (CVSS 7.8) affecting i2p. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

I2P before 0.9.46 allows local users to gain privileges via a Trojan horse I2PSvc.exe file because of weak permissions on a certain %PROGRAMFILES% subdirectory.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.3% (top 76%)
CISA exploited list	No
Weakness	CWE-732
Published	2020-06-16
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: geti2p

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2020-06-16 13:15 UTCPublished CVE record published
2026-06-17 02:53 UTCUpdated Record last modified

geti2p i2p UPGRADE

Affected: < 0.9.46

Fixed in: 0.9.46

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy i2p || rpm -q i2p || i2p --version

2. UPGRADE to 0.9.46 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade i2p

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade i2p

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2020-13431?

i2p: upgrade to 0.9.46. Exact commands for each OS are on this page.

Is CVE-2020-13431 being exploited?

CVE-2020-13431 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2020-13431 affect?

CVE-2020-13431 affects i2p. Severity is high (CVSS 7.8). I2P before 0.9.46 allows local users to gain privileges via a Trojan horse I2PSvc.exe file because of weak permissions on a certain %PROGRAMFILES% subdirectory.

How urgent is CVE-2020-13431?

Priority 33/100. High severity

References

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