What is CVE-2009-1348?A high-severity flaw in Active Virus Defense, explained.
CVE-2009-1348 is a high-severity flaw (CVSS 7.6) in Active Virus Defense from Mcafee, published on 30 April 2009. It is not on the list of flaws known to be exploited today. The latest forecast puts its chance of use in the next 30 days at 2.8%. If you run an affected version, plan in the vendor’s fix.
Published 30 April 2009. Record last updated 16 June 2026. We keep this page's data up to date.
What is CVE-2009-1348? In plain terms.
It can be attacked from anywhere on the internet without logging in. If it works, the attacker can read data, change data and take it offline.
The AV engine before DAT 5600 in McAfee VirusScan, Total Protection, Internet Security, SecurityShield for Microsoft ISA Server, Security for Microsoft Sharepoint, Security for Email Servers, Email Gateway, and Active Virus Defense allows remote attackers to bypass virus detection via (1) an invalid Headflags field in a malformed RAR archive, (2) an invalid Packsize field in a malformed RAR archive, or (3) an invalid Filelength field in a malformed ZIP archive.
What kind of flaw is it?
- CWE-20Improper Input Validation
How an attack on it works
Read straight from its severity rating, translated out of the shorthand.
- Where an attacker can beAnywhere on the internet
- How hard it is to pull offHard: conditions must line up
- Login needed firstNo login needed
- What an attacker getsCan read data, change data and take it offline
Severity vector: AV:N/AC:H/Au:N/C:C/I:C/A:C
Is CVE-2009-1348 being exploited? Not that we know of.
It is not on the list of flaws known to be exploited today. The latest forecast puts the chance of it being used in the next 30 days at 2.8%. That can change at any time, which is why we keep watching.
Timeline
- Published
- Record last updated
CVE-2009-1348 scores 46. Action: Plan remediation.
We keep the score of every published flaw up to date as the evidence changes. Four things go into the score, and evidence that criminals are actually using it counts most. In order:
- Evidence it is being exploitedBiggest factor
- How severe it isStrong factor
- How widely exposed it isSmaller factor
- Threat activity around itSmaller factor
85 and above is Critical. Anything confirmed as exploited is always marked for an emergency patch, whatever its score.
When CVE-2009-1348 matches software you track, it lands in your list with its score and the reasons behind it.
See your own ranked list →Who is affected by CVE-2009-1348? 13 products.
The published record lists 13 products from 1 vendor. If you run one of these, check your version, then go to the fix below.
- Application
Active Virus Defense
by Mcafee
Affected versionsall versions - Application
Internet Security Suite
by Mcafee
Affected versionsall versions2004200520062009 - Application
Active Virusscan
by Mcafee
Affected versionsall versions - Application
Email Gateway
by Mcafee
Affected versionsall versions - Application
Securityshield for Email Servers
by Mcafee
Affected versionsall versions - Application
Securityshield for Microsoft Isa Server
by Mcafee
Affected versionsall versions - Application
Securityshield for Microsoft Sharepoint
by Mcafee
Affected versionsall versions - Application
Total Protection
by Mcafee
Affected versions2009 - Application
Total Protection for Endpoint
by Mcafee
Affected versionsall versions
How do I fix CVE-2009-1348? Four steps.
- Check whether you run itCompare your versions with the affected products above. Not sure what you run? Precursor Intelligence can work it out from your public website, or you can pick it from a list.
- Apply the vendor’s fixInstall the update named in the vendor’s advisory. We’ve put the advisories and patch notes first in the list.
- If you can’t patch todayFollow any mitigation the vendor publishes, and limit who can reach the affected system from the internet until the update is in.
- Keep an eye on itTrack the product and we tell you as soon as we spot this flaw on the list of exploited flaws, or a jump in its exploit likelihood.
Does CVE-2009-1348 affect you? We'll keep checking.
Looking flaws up one at a time doesn't scale. Tell us what you run once, and we tell you which flaws matter to you, in what order, and keep watching for new ones.
- Tell us what you runPick your software from a list, or let us work it out from your website.
- We match it to every flawOver 400,000 published flaws, checked against your list.
- Ranked by real-world riskA 0 to 100 score, led by evidence criminals are using it.
- Told as soon as we knowAn alert by email, in the app or by webhook to your own tools.
Free plan, no card needed. Nothing to install.
1 new flaw affects software Acme tracks
The AV engine before DAT 5600 in McAfee VirusScan, Total Protection, Internet Security, SecurityShield for Microsoft ISA Server, Security for Microsoft Share...
- Matched to
- Active Virus Defense on Acme's software list
- What to do
- Plan in the vendor’s update
Sent to the alert recipients Acme chose. Also in the app and to Acme's webhook.
CVE-2009-1348 is a high-severity flaw in Active Virus Defense from Mcafee, published on 30 April 2009. It can be attacked from anywhere on the internet without logging in. If it works, the attacker can read data, change data and take it offline.
It scores 7.6 out of 10 on the CVSS severity scale, which is high. Our risk score for CVE-2009-1348 is 46 out of 100, which is Medium. Its action is "Plan remediation". No sign of exploitation and a low forecast. Patch it in your normal update cycle.
It is not on the list of flaws known to be exploited today. The latest forecast puts the chance of it being used in the next 30 days at 2.8%. That can change at any time, which is why we keep watching.
For Active Virus Defense from Mcafee: all versions. The record lists 13 products in all, each with its versions, under "Who is affected" on this page.
Install the update the vendor names in its advisory, linked first under "How do I fix" on this page. If you can't patch today, follow the vendor's mitigation and limit who can reach the affected system from the internet.