The ESET AV parsing engine allows virus-detection bypass via a crafted BZ2 Checksum field in an archive.
The ESET AV parsing engine allows virus-detection bypass via a crafted BZ2 Checksum field in an archive. This affects versions before 1294 of Smart Security Premium, Internet Security, NOD32 Antivirus, Cyber Security Pro (macOS), Cyber Security (macOS), Mobile Security for Android, Smart TV Security, and NOD32 Antivirus 4 for Linux Desktop.
Noroxi analysis
No Noroxi analysis for this record yet
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We use this product, ask for help- Published
- Mar 5, 2020
- Updated
- Jun 16, 2026
- EPSS
- 1.7% · 76th percentile
- CWE
- CWE-436
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Report tools
Action score
40
Plan
Add it to your regular patch cycle.
- CVSS
- 39 / 40 · 9.8 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 1 / 30 · 1.7%
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| eset | cyber security | cpe:2.3:a:eset:cyber_security |
| eset | mobile security | cpe:2.3:a:eset:mobile_security |
| eset | nod32 antivirus | cpe:2.3:a:eset:nod32_antivirus |
| eset | smart security | cpe:2.3:a:eset:smart_security |
| eset | smart tv security | cpe:2.3:a:eset:smart_tv_security |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- eset cyber securitybefore 1294
- eset mobile securitybefore 1294
- eset nod32 antivirusbefore 1294
- eset nod32 antivirus4
- eset smart securitybefore 1294
- eset smart tv securitybefore 1294
Same product
eset: all recordsOther highest-scoring records for the same primary product.
- CVE-2023-2847Local privilege escalation in ESET products for Linux and MacOS31Monitor
- CVE-2019-16519ESET Cyber Security 6.7.900.0 for macOS allows a local attacker to execute unauthorized commands as root by abusing an undocumented feature 31Monitor
- CVE-2020-10193ESET Archive Support Module before 1294 allows virus-detection bypass via crafted RAR Compression Information in an archive.30Monitor
- CVE-2019-19792A permissions issue in ESET Cyber Security before 6.8.300.0 for macOS allows a local attacker to escalate privileges by appending data to ro26Monitor
- CVE-2019-17549ESET Cyber Security before 6.8.1.0 is vulnerable to a denial-of-service allowing any user to stop (kill) ESET processes.26Monitor
- CVE-2021-37850Denial of service in ESET for Mac products22Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
No fix version is recorded for this entry. Check the references for vendor advisories.
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
- Anyone who can reach it over the internet can trigger it.
- No account or password is required.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- high · data can be read
- Integrity
- high · data or configuration can be modified
- Availability
- high · the service can be disrupted
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
Weakness class (CWE)
CWE-436 · Interpretation ConflictCVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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.
Change log
No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.
References
Vendor advisories and official records. Exploit/PoC links are deliberately left out.