CVE-2023-2873: A vulnerability classified as critical was found in Twister Antivirus 8

Routine

MEDIUM 5.3UPGRADE

CVE-2023-2873 is a medium-severity flaw (CVSS 5.3) affecting twister antivirus. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A vulnerability classified as critical was found in Twister Antivirus 8. This vulnerability affects the function 0x804f2143/0x804f217f/0x804f214b/0x80800043 in the library filppd.sys of the component IoControlCode Handler. The manipulation leads to memory corruption. Local access is required to approach this attack. The exploit has been disclosed to the public and may be used. The identifier of this vulnerability is VDB-229852. NOTE: The vendor w

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	5.3 (Medium)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.4% (top 70%)
CISA exploited list	No
Weakness	CWE-119, CWE-787
Published	2023-05-24
Last modified	2026-06-17

Publisher (CNA): VulDB · Vendor: filseclab

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

Am I affected?

Timeline

2023-05-24 18:15 UTCPublished CVE record published
2026-06-17 05:53 UTCUpdated Record last modified

filseclab twister antivirus UPGRADE

Affected: >= 8.0 and <= 8.17

Fixed in: newer than 8.17

Safe to downgrade to: a release before 8.0

1. Check installed version

apt-cache policy twister-antivirus || rpm -q twister-antivirus || twister-antivirus --version

2. UPGRADE to newer than 8.17 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade twister-antivirus

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade twister-antivirus

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 8.0 (Debian / Ubuntu)

apt-cache madison twister-antivirus sudo apt install twister-antivirus=<VERSION_BEFORE_8.0> sudo apt-mark hold twister-antivirus

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list twister-antivirus sudo dnf downgrade twister-antivirus-<VERSION_BEFORE_8.0> sudo dnf versionlock add twister-antivirus

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-2023-2873?

twister antivirus: upgrade to newer than 8.17. Exact commands for each OS are on this page.

Is CVE-2023-2873 being exploited?

CVE-2023-2873 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-2023-2873 affect?

CVE-2023-2873 affects twister antivirus. Severity is medium (CVSS 5.3). A vulnerability classified as critical was found in Twister Antivirus 8. This vulnerability affects the function 0x804f2143/0x804f217f/0x804f214b/0x80800043 in the library filppd.sys of the component IoControlCode Handler. The manipulation

How urgent is CVE-2023-2873?

Priority 31/100. Public exploit reference

Related CVEs

CVE-2024-1140 MEDIUM 6.1 DOWNGRADE Twister Antivirus v8.17 is vulnerable to an Out-of-bounds Read vulnerability by triggering the 0x801120B8 IOCT
CVE-2024-1096 MEDIUM 5.5 DOWNGRADE Twister Antivirus v8.17 is vulnerable to a Denial of Service vulnerability by triggering the 0x80112067, 0x801
CVE-2023-2874 MEDIUM 5.5 UPGRADE A vulnerability, which was classified as problematic, has been found in Twister Antivirus 8
CVE-2023-1445 LOW 3.3 DOWNGRADE A vulnerability classified as problematic has been found in Filseclab Twister Antivirus 8
CVE-2023-1444 HIGH 7.5 DOWNGRADE A vulnerability was found in Filseclab Twister Antivirus 8

References

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