CVE Explorer
CVE-2026-27750
Avira Internet Security contains a time-of-check time-of-use (TOCTOU) vulnerability in the Optimizer component. A privileged service running as SYSTEM identifies directories for cleanup during a scan phase and subsequently deletes them during a separate cleanup phase without revalidating the target path. A local attacker can replace a previously scanned directory with a junction or reparse point before deletion occurs, causing the privileged process to delete an unintended system location. This
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"defaultStatus":"unaffected","platforms":["Windows"],"product":"Avira Internet Security","vendor":"Gen Digital Inc.","versions":[{"lessThanOrEqual":"1.1.109.1990","status":"affected","version":"0","versionType":"semver"},{"status":"unaffected","version":"1.1.114.3113","versionType":"semver"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:46e7bfbf173ea0a2464f69571db4f7970400e86559f3ef5c36c783438b48beba · sha256:16d9225c004d97b1… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":7.8,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:46e7bfbf173ea0a2464f69571db4f7970400e86559f3ef5c36c783438b48beba · sha256:16d9225c004d97b1… · /containers/cna/metrics/0/cvssV3_1
CWE assertions
1 source assertion{"cweId":"CWE-367","description":"CWE-367 Time-of-check Time-of-use (TOCTOU) Race Condition","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:46e7bfbf173ea0a2464f69571db4f7970400e86559f3ef5c36c783438b48beba · sha256:16d9225c004d97b1… · /containers/cna/problemTypes/0/descriptions/0
Source references
3 source assertions{"tags":["release-notes"],"url":"https://support.avira.com/hc/en-us/articles/360010656158-Current-Avira-versions"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:46e7bfbf173ea0a2464f69571db4f7970400e86559f3ef5c36c783438b48beba · sha256:16d9225c004d97b1… · /containers/cna/references/0
{"tags":["product"],"url":"https://www.avira.com/en/internet-security"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:46e7bfbf173ea0a2464f69571db4f7970400e86559f3ef5c36c783438b48beba · sha256:16d9225c004d97b1… · /containers/cna/references/1
{"tags":["vendor-advisory"],"url":"https://www.gendigital.com/us/en/contact-us/security-advisories/"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:46e7bfbf173ea0a2464f69571db4f7970400e86559f3ef5c36c783438b48beba · sha256:16d9225c004d97b1… · /containers/cna/references/2
Attribution and limitations
- CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →
Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.