CVE-2011-1003

Double free vulnerability in the vba_read_project_strings function in vba_extract.c in libclamav...

6.8 MediumFix available

Double free vulnerability in the vba_read_project_strings function in vba_extract.c in libclamav in ClamAV before 0.97 might allow remote attackers to execute arbitrary code via crafted Visual Basic for Applications (VBA) data in a Microsoft Office document. NOTE: some of these details are obtained from third party information.

Exploit likelihood

4.21%Down 5.7 points since Feb 4, 2022

What each source reports

NVD Score used 6.8

Record: CVE-2011-1003
CVSS 2.0: 6.8 MediumAV:N/AC:M/Au:N/C:P/I:P/A:P
Weakness: CWE-399
Updated: 2026-11-02

CVE List No score

Record: CVE-2011-1003
Updated: 2026-11-02

EUVDEUVD-2011-1020 No score

Record: EUVD-2011-1020
Updated: 2026-11-03

GitHub AdvisoriesGHSA-vmrc-q6qc-cw92 No score

Double free vulnerability in the vba_read_project_strings function in vba_extract.c in libclamav...

Record: GHSA-vmrc-q6qc-cw92
Updated: 2026-11-02

OSV No score

Record: CVE-2011-1003
Updated: 2026-11-02

OSVDEBIAN-CVE-2011-1003 No score

Record: DEBIAN-CVE-2011-1003
Updated: 2026-11-02

Affected products

clamav

Affected packages

Affected packages
Package	Affected	Fixed
`clamav` Debian:12	before 0.97+dfsg-1	0.97+dfsg-1
`clamav` Debian:13	before 0.97+dfsg-1	0.97+dfsg-1
`clamav` Debian:14	before 0.97+dfsg-1	0.97+dfsg-1

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2011-1003 is a medium vulnerability (CVSS 6.8) in Clamav, published February 23, 2011. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 4.21%, the 91st percentile. Fixed in clamav 0.97+dfsg-1.

References

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