CVE-2024-48877: A memory corruption vulnerability exists in the Shared String Table Record Parser implementation in xls2csv ut

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HIGH 8.4DOWNGRADE

CVE-2024-48877 is a high-severity flaw (CVSS 8.4) affecting xls2csv. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A memory corruption vulnerability exists in the Shared String Table Record Parser implementation in xls2csv utility version 0.95. A specially crafted malformed file can lead to a heap buffer overflow. An attacker can provide a malicious file to trigger this vulnerability.

Why this priority

High severity
Public exploit reference

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

Risk facts

CVSS score	8.4 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.3% (top 74%)
CISA exploited list	No
Weakness	CWE-680, CWE-787
Published	2025-06-02
Last modified	2026-06-17

Publisher (CNA): Talos · Vendor: wagner

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

Am I affected?

Timeline

2025-06-02 15:15 UTCPublished CVE record published
2026-06-17 07:58 UTCUpdated Record last modified

wagner xls2csv DOWNGRADE

Affected: 0.95

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.95

1. Check installed version

apt-cache policy xls2csv || rpm -q xls2csv || xls2csv --version

2. No fixed release: DOWNGRADE to a release before 0.95 (Debian / Ubuntu)

apt-cache madison xls2csv sudo apt install xls2csv=<VERSION_BEFORE_0.95> sudo apt-mark hold xls2csv

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

dnf --showduplicates list xls2csv sudo dnf downgrade xls2csv-<VERSION_BEFORE_0.95> sudo dnf versionlock add xls2csv

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-2024-48877?

xls2csv: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2024-48877 being exploited?

CVE-2024-48877 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-2024-48877 affect?

CVE-2024-48877 affects xls2csv. Severity is high (CVSS 8.4). A memory corruption vulnerability exists in the Shared String Table Record Parser implementation in xls2csv utility version 0.95. A specially crafted malformed file can lead to a heap buffer overflow. An attacker can provide a malicious fil

How urgent is CVE-2024-48877?

Priority 41/100. High severity; Public exploit reference

References

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