CVE-2026-52756: Ghidra before 12.2 contains an unauthenticated path traversal vulnerability in the IsfServer that accepts TCP

Q: How do I fix CVE-2026-52756?

ghidra: upgrade to newer than 12.1.2. Exact commands for each OS are on this page.

Q: Is CVE-2026-52756 being exploited?

CVE-2026-52756 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-2026-52756 affect?

CVE-2026-52756 affects ghidra. Severity is medium (CVSS 4.8). Ghidra before 12.2 contains an unauthenticated path traversal vulnerability in the IsfServer that accepts TCP connections and passes client-supplied namespace strings directly to filesystem operations without validation. Remote attackers ca

Q: How urgent is CVE-2026-52756?

Priority 37/100. Public exploit reference; Remotely exploitable, no login, no user action

This week

MEDIUM 4.8REMOTEUPGRADE

CVE-2026-52756 is a medium-severity flaw (CVSS 4.8) affecting ghidra. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Ghidra before 12.2 contains an unauthenticated path traversal vulnerability in the IsfServer that accepts TCP connections and passes client-supplied namespace strings directly to filesystem operations without validation. Remote attackers can connect to port 54321 and send crafted protobuf messages with traversal sequences to enumerate filesystem paths and probe arbitrary files.

Why this priority

Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	4.8 (Medium)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	0.5% (top 61%)
CISA exploited list	No
Weakness	CWE-22
Published	2026-06-10
Last modified	2026-10-26

Publisher (CNA): VulnCheck · Vendor: nsa

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-06-10 14:16 UTCPublished CVE record published
2026-10-26 11:10 UTCUpdated Record last modified

nsa ghidra UPGRADE

Affected: <= 12.1.2

Fixed in: newer than 12.1.2

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 12.1.2 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade ghidra

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-2026-52756?

ghidra: upgrade to newer than 12.1.2. Exact commands for each OS are on this page.

Is CVE-2026-52756 being exploited?

CVE-2026-52756 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-2026-52756 affect?

CVE-2026-52756 affects ghidra. Severity is medium (CVSS 4.8). Ghidra before 12.2 contains an unauthenticated path traversal vulnerability in the IsfServer that accepts TCP connections and passes client-supplied namespace strings directly to filesystem operations without validation. Remote attackers ca

How urgent is CVE-2026-52756?

Priority 37/100. Public exploit reference; Remotely exploitable, no login, no user action

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CVE-2026-49498 HIGH 8.8 UPGRADE Ghidra 11.0 before 12.1 contains a SQL injection vulnerability in the changePassword() method of PostgresFunct
CVE-2026-52752 HIGH 7.8 UPGRADE Ghidra before 12.0.2 contains a path traversal vulnerability in the extension installer that fails to validate
CVE-2026-52754 HIGH 8.8 UPGRADE Ghidra before 12.1 contains an authentication bypass vulnerability in PKIAuthenticationModule.authenticate() t

References

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