CVE-2023-25344: An issue was discovered in swig-templates thru 2.0.4 and swig thru 1.4.2, allows attackers to execute arbitrar

Q: How do I fix CVE-2023-25344?

swig-templates: upgrade to newer than 2.0.4; swig: upgrade to newer than 1.4.2. Exact commands for each OS are on this page.

Q: Is CVE-2023-25344 being exploited?

CVE-2023-25344 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-2023-25344 affect?

CVE-2023-25344 affects swig-templates, swig. Severity is critical (CVSS 9.8). An issue was discovered in swig-templates thru 2.0.4 and swig thru 1.4.2, allows attackers to execute arbitrary code via crafted Object.prototype anonymous function.

Q: How urgent is CVE-2023-25344?

Priority 60/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

This week

CRITICAL 9.8REMOTEUPGRADEUPGRADE

CVE-2023-25344 is a critical-severity flaw (CVSS 9.8) affecting swig-templates, swig. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An issue was discovered in swig-templates thru 2.0.4 and swig thru 1.4.2, allows attackers to execute arbitrary code via crafted Object.prototype anonymous function.

Why this priority

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

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.0% (top 36%)
CISA exploited list	No
Weakness	CWE-94
Published	2023-03-15
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: swig project · swig-templates project

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

Am I affected?

Timeline

2023-03-15 20:15 UTCPublished CVE record published
2026-06-17 05:41 UTCUpdated Record last modified

swig-templates project swig-templates UPGRADE

Affected: <= 2.0.4

Fixed in: newer than 2.0.4

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy swig-templates || rpm -q swig-templates || swig-templates --version

2. UPGRADE to newer than 2.0.4 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade swig-templates

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade swig-templates

Note

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

swig project swig UPGRADE

Affected: <= 1.4.2

Fixed in: newer than 1.4.2

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 1.4.2 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade swig

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-2023-25344?

swig-templates: upgrade to newer than 2.0.4; swig: upgrade to newer than 1.4.2. Exact commands for each OS are on this page.

Is CVE-2023-25344 being exploited?

CVE-2023-25344 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-2023-25344 affect?

CVE-2023-25344 affects swig-templates, swig. Severity is critical (CVSS 9.8). An issue was discovered in swig-templates thru 2.0.4 and swig thru 1.4.2, allows attackers to execute arbitrary code via crafted Object.prototype anonymous function.

How urgent is CVE-2023-25344?

Priority 60/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2023-25345 HIGH 7.5 UPGRADE UPGRADE Directory traversal vulnerability in swig-templates thru 2.0.4 and swig thru 1.4.2, allows attackers to read a

References

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