Internet Security Premium: Improper Validation of Integrity Check Value
CVE-2025-7096 is a high-severity improper validation of integrity check value vulnerability in Internet Security Premium from Comodo, with a CVSS 3.1 base score of 8.8 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, but only if a user takes part, for example by opening a link or file. Affected Internet Security Premium versions: 12.3.4.8162. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.48% chance of exploitation within 30 days, which is low compared with other CVEs.
High severity with no evidence of exploitation so far.
What to do
- Check which version of Internet Security Premium you run against the affected versions below, and install the vendor's latest release.
- Until you can update, restrict network access to the affected service so it is not reachable from untrusted networks.
- Because the attack needs a user to take part, warn users about unexpected links and files related to this product until it is patched.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Comodo | Internet Security Premium | 12.3.4.8162 | Not stated |
| Comodo | Internet Security | 12.3.4.8162 | Not stated |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- NetworkCan be exploited remotely over a network, including the internet.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- NoneNo account or login is needed.
- User interaction
- RequiredA user must take an action such as opening a file or link.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- HighData or code can be modified at will.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 4.0 | 8.2 | High | CNA (vuldb.com) |
| CVSS 3.1 | 8.1 | High | CNA (vuldb.com) |
| CVSS 3.1 | 8.8 | High | NVD |
| CVSS 2.0 | 7.6 | High | CNA (vuldb.com) |
Official description
A vulnerability classified as critical was found in Comodo Internet Security Premium 12.3.4.8162. This vulnerability affects unknown code of the file cis_update_x64.xml of the component Manifest File Handler. The manipulation leads to improper validation of integrity check value. The attack can be initiated remotely. The complexity of an attack is rather high. The exploitation appears to be difficult. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Improper Validation of Integrity Check Value
The product does not validate or incorrectly validates the integrity check values or checksums of a message.
How developers prevent this class of flaw
- The protocol specification describes the algorithm used for calculating the checksum. It is then a matter of implementing the calculation and verifying that the calculated checksum and the received checksum match.
More Improper Validation of Integrity Check Value vulnerabilities (CWE-354)
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: poc, automatable: no, technical impact: total).
- Record last changed materially (score, affected products, status or references).
References
Third-party and government advisories
- vuldb.com/?id.315010Third Party Advisory, VDB Entry
- vuldb.com/?submit.603713Third Party Advisory, VDB Entry
Technical write-ups (may include proof of concept)
- drive.google.com/file/d/1qnWarYsTSc5_sV6o8ULv0LBvGfKKXPxn/view?usp=sharingExploit, Third Party Advisory
- drive.google.com/file/d/1qnWarYsTSc5_sV6o8ULv0LBvGfKKXPxn/viewExploit, Third Party Advisory
Other references
- vuldb.com/?ctiid.315010Permissions Required, VDB Entry
Other vulnerabilities in Internet Security Premium
- 8.8 High severity
- 8.8 High severity
Recent Improper Validation of Integrity Check Value vulnerabilities
- 7.8 High severity
- 7.8 High severity
- 8.0 High severity
- 7.8 High severity
- 8.7 High severity
- 9.0 Critical severity
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