Multiple format string vulnerabilities in the logging code in Clam AntiVirus (ClamAV) before 0.88.1 might allow remote attackers to execute
Noroxi assessment
Priority: Plan (action score 43/100)
- The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
- Probability of exploitation in the next 30 days: 11.6% (FIRST EPSS); higher than 95.9% of all records.
- No special conditions are required; it is repeatable.
- Fixed version: clamav (Debian:12) 0.88.1-1; clamav (Debian:3.1) 0.84-2.sarge.8.
Add it to your regular patch cycle. Upgrade to clamav (Debian:12) 0.88.1-1; clamav (Debian:3.1) 0.84-2.sarge.8 or later.
Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it
Multiple format string vulnerabilities in the logging code in Clam AntiVirus (ClamAV) before 0.88.1 might allow remote attackers to execute arbitrary code. NOTE: as of 20060410, it is unclear whether this is a vulnerability, as there is some evidence that the arguments are actually being sanitized properly.
- Published
- Apr 6, 2006
- Updated
- Jun 16, 2026
- EPSS
- 11.6% · 96th percentile
- CWE
- CWE-134
Report tools
Action score
43
Plan
Add it to your regular patch cycle.
- CVSS
- 40 / 40 · 10.0 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 3 / 30 · 11.6%
Get told when this record changes
- Not in KEV: no record of exploitation in the wild
- No public exploit code on record
- A fix has been released
If any of these changes, we'll tell you in the daily email digest.
Is your version affected? Check itNoroxi analysis
What does it mean in your environment?
The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.
We use this product, ask for helpAffected systems
Is your version affected?
Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.
| Vendor | Product | CPE |
|---|---|---|
| clamav | clamav | cpe:2.3:a:clamav:clamav |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- clamav clamavup to 0.88 inclusive
- clamav clamav0.01
- clamav clamav0.02
- clamav clamav0.03
- clamav clamav0.05
- clamav clamav0.10
- clamav clamav0.12
- clamav clamav0.13
- clamav clamav0.14
- clamav clamav0.15
- clamav clamav0.20
- clamav clamav0.21
- clamav clamav0.22
- clamav clamav0.23
- clamav clamav0.24
- clamav clamav0.3
- clamav clamav0.51
- clamav clamav0.52
- clamav clamav0.53
- clamav clamav0.54
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:12 | clamav | before 0.88.1-1 | 0.88.1-1 |
| Debian:3.1 | clamav | before 0.84-2.sarge.8 | 0.84-2.sarge.8 |
Same product
clamav: all recordsOther highest-scoring records for the same primary product.
- CVE-2023-20032On Feb 15, 2023, the following vulnerability in the ClamAV scanning library was disclosed:
A vulnerability in the HFS+ partition file p48Plan
- CVE-2024-20328ClamAV VirusEvent File Processing Command Injection Vulnerability46Plan
- CVE-2017-12379ClamAV AntiVirus software versions 0.99.2 and prior contain a vulnerability that could allow an unauthenticated, remote attacker to cause a 43Plan
- CVE-2017-12377ClamAV AntiVirus software versions 0.99.2 and prior contain a vulnerability that could allow an unauthenticated, remote attacker to cause a 42Plan
- CVE-2009-1372Stack-based buffer overflow in the cli_url_canon function in libclamav/phishcheck.c in ClamAV before 0.95.1 allows remote attackers to cause42Plan
- CVE-2010-0098ClamAV before 0.96 does not properly handle the (1) CAB and (2) 7z file formats, which allows remote attackers to bypass virus detection via41Plan
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| debian:clamav | 0.88.1-1 · Debian:12 | Package registry (OSV) |
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- C · data can be read
- Integrity
- C · data or configuration can be modified
- Availability
- C · the service can be disrupted
- Attack complexity
- Low
- Confidentiality impact
- C
- Integrity impact
- C
- Availability impact
- C
Weakness class (CWE)
CWE-134 · Use of Externally-Controlled Format StringCVSS vector
AV:N/AC:L/Au:N/C:C/I:C/A:C
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
ATT&CK techniques
—
Change log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
- lists.apple.com/archives/security-announce/2006/May/msg00003.html
- lists.suse.com/archive/suse-security-announce/2006-Apr/0002.html
- secunia.com/advisories/19534
- secunia.com/advisories/19536
- secunia.com/advisories/19564
- secunia.com/advisories/19567
- secunia.com/advisories/19570
- secunia.com/advisories/19608
- secunia.com/advisories/20077
- secunia.com/advisories/23719
- sourceforge.net/project/shownotes.php?release_id=407078&group_id=86638
- up2date.astaro.com/2006/05/low_up2date_6202.html
- www.debian.org/security/2006/dsa-1024
- www.gentoo.org/security/en/glsa/glsa-200604-06.xml
- www.mandriva.com/security/advisories?name=MDKSA-2006:067
- www.osvdb.org/24458
- www.securityfocus.com/bid/17388
- www.securityfocus.com/bid/17951
- www.trustix.org/errata/2006/0020
- www.us-cert.gov/cas/techalerts/TA06-132A.html
Vendor advisories and official records. Exploit/PoC links are deliberately left out.