CVE-2024-28458: Null Pointer Dereference vulnerability in swfdump in swftools 0.9.2 allows attackers to crash the appliation v

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HIGH 7.5REMOTEDOWNGRADE

CVE-2024-28458 is a high-severity flaw (CVSS 7.5) affecting swftools. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Null Pointer Dereference vulnerability in swfdump in swftools 0.9.2 allows attackers to crash the appliation via the function compileSWFActionCode in action/actioncompiler.c.

Why this priority

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

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.7% (top 46%)
CISA exploited list	No
Weakness	CWE-476
Published	2024-04-11
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: swftools

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

Am I affected?

Timeline

2024-04-11 21:15 UTCPublished CVE record published
2026-06-17 07:21 UTCUpdated Record last modified

swftools swftools DOWNGRADE

Affected: 0.9.2

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.9.2

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 0.9.2 (Debian / Ubuntu)

apt-cache madison swftools sudo apt install swftools=<VERSION_BEFORE_0.9.2> sudo apt-mark hold swftools

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list swftools sudo dnf downgrade swftools-<VERSION_BEFORE_0.9.2> sudo dnf versionlock add swftools

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

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-2024-28458?

swftools: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2024-28458 being exploited?

CVE-2024-28458 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-2024-28458 affect?

CVE-2024-28458 affects swftools. Severity is high (CVSS 7.5). Null Pointer Dereference vulnerability in swfdump in swftools 0.9.2 allows attackers to crash the appliation via the function compileSWFActionCode in action/actioncompiler.c.

How urgent is CVE-2024-28458?

Priority 50/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2024-26339 CRITICAL 9.1 DOWNGRADE swftools v0.9.2 was discovered to contain a strcpy parameter overlap via /home/swftools/src/swfc+0x48318a.
CVE-2024-26337 MEDIUM 4.3 DOWNGRADE swftools v0.9.2 was discovered to contain a segmentation violation via the function s_font at swftools/src/swf
CVE-2024-26335 MEDIUM 5.5 DOWNGRADE swftools v0.9.2 was discovered to contain a segmentation violation via the function state_free at swftools/src
CVE-2024-26334 MEDIUM 6.2 DOWNGRADE swftools v0.9.2 was discovered to contain a segmentation violation via the function compileSWFActionCode at sw
CVE-2024-26333 MEDIUM 5.5 DOWNGRADE swftools v0.9.2 was discovered to contain a segmentation violation via the function free_lines at swftools/lib

References

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