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CVE-2026-14191

An out-of-bounds heap write exists in the RAR5 recovery-volume (.rev) parser in WinRAR and UnRAR (RecVolumes5::ReadHeader in recvol5.cpp). The RecItems vector is sized only when the first .rev file in a set is processed; subsequent .rev files supply an independent RecNum value that is validated against that file's own TotalCount field but never against the actual size of RecItems. A crafted set of two or more .rev files can therefore write an attacker-controlled 32-bit value (the header's RevCRC
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:eb74c4ecbe6fbc1870d8515f837a791090144767445e18ea4c2651c280a8c1f4
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
2

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 4 assertions

{"defaultStatus":"unaffected","platforms":["Windows"],"product":"WinRAR","vendor":"RARLAB","versions":[{"lessThan":"7.23","status":"affected","version":"0","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:5b1b70e1ec8067c016a3905457499c37a8310cafc5928eb837662abc38ac0b7e · sha256:0619b9858e660d13… · /containers/cna/affected/0

{"defaultStatus":"unaffected","platforms":["Windows","Linux","macOS"],"product":"UnRAR","vendor":"RARLAB","versions":[{"lessThanOrEqual":"7.21","status":"affected","version":"0","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:5b1b70e1ec8067c016a3905457499c37a8310cafc5928eb837662abc38ac0b7e · sha256:0619b9858e660d13… · /containers/cna/affected/2

{"defaultStatus":"unaffected","platforms":["Windows"],"product":"UnRAR.dll","vendor":"RARLAB","versions":[{"lessThan":"7.23","status":"affected","version":"0","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:5b1b70e1ec8067c016a3905457499c37a8310cafc5928eb837662abc38ac0b7e · sha256:0619b9858e660d13… · /containers/cna/affected/3

{"defaultStatus":"unaffected","platforms":["Windows","Linux","macOS"],"product":"RAR","vendor":"RARLAB","versions":[{"lessThan":"7.23","status":"affected","version":"0","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:5b1b70e1ec8067c016a3905457499c37a8310cafc5928eb837662abc38ac0b7e · sha256:0619b9858e660d13… · /containers/cna/affected/1
cwe · 2 assertions

{"cweId":"CWE-787","description":"CWE-787 Out-of-bounds Write","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:5b1b70e1ec8067c016a3905457499c37a8310cafc5928eb837662abc38ac0b7e · sha256:0619b9858e660d13… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-129","description":"CWE-129 Improper Validation of Array Index","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:5b1b70e1ec8067c016a3905457499c37a8310cafc5928eb837662abc38ac0b7e · sha256:0619b9858e660d13… · /containers/cna/problemTypes/0/descriptions/1

Affected products and versions

4 source assertions
{"defaultStatus":"unaffected","platforms":["Windows"],"product":"WinRAR","vendor":"RARLAB","versions":[{"lessThan":"7.23","status":"affected","version":"0","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:5b1b70e1ec8067c016a3905457499c37a8310cafc5928eb837662abc38ac0b7e · sha256:0619b9858e660d13… · /containers/cna/affected/0
{"defaultStatus":"unaffected","platforms":["Windows","Linux","macOS"],"product":"UnRAR","vendor":"RARLAB","versions":[{"lessThanOrEqual":"7.21","status":"affected","version":"0","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:5b1b70e1ec8067c016a3905457499c37a8310cafc5928eb837662abc38ac0b7e · sha256:0619b9858e660d13… · /containers/cna/affected/2
{"defaultStatus":"unaffected","platforms":["Windows"],"product":"UnRAR.dll","vendor":"RARLAB","versions":[{"lessThan":"7.23","status":"affected","version":"0","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:5b1b70e1ec8067c016a3905457499c37a8310cafc5928eb837662abc38ac0b7e · sha256:0619b9858e660d13… · /containers/cna/affected/3
{"defaultStatus":"unaffected","platforms":["Windows","Linux","macOS"],"product":"RAR","vendor":"RARLAB","versions":[{"lessThan":"7.23","status":"affected","version":"0","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:5b1b70e1ec8067c016a3905457499c37a8310cafc5928eb837662abc38ac0b7e · sha256:0619b9858e660d13… · /containers/cna/affected/1

Provider-owned CVSS observations

1 source assertion
{"metric":{"baseScore":7.8,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:5b1b70e1ec8067c016a3905457499c37a8310cafc5928eb837662abc38ac0b7e · sha256:0619b9858e660d13… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

2 source assertions
{"cweId":"CWE-787","description":"CWE-787 Out-of-bounds Write","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:5b1b70e1ec8067c016a3905457499c37a8310cafc5928eb837662abc38ac0b7e · sha256:0619b9858e660d13… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-129","description":"CWE-129 Improper Validation of Array Index","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:5b1b70e1ec8067c016a3905457499c37a8310cafc5928eb837662abc38ac0b7e · sha256:0619b9858e660d13… · /containers/cna/problemTypes/0/descriptions/1

Source references

3 source assertions
{"name":"CVE-2023-40477 - Sibling RAR3-path vulnerability fixed in WinRAR 6.23","tags":["related"],"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-40477"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:5b1b70e1ec8067c016a3905457499c37a8310cafc5928eb837662abc38ac0b7e · sha256:0619b9858e660d13… · /containers/cna/references/1
{"name":"WinRAR / RAR 7.23 download (fixed release, 2026-06-30)","tags":["patch","vendor-advisory"],"url":"https://www.rarlab.com/download.htm"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:5b1b70e1ec8067c016a3905457499c37a8310cafc5928eb837662abc38ac0b7e · sha256:0619b9858e660d13… · /containers/cna/references/0
{"url":"https://www.securin.io/zero-days/cve-2026-14191-winrar-unrar-rar5-recovery-volume-rev-out-of-bounds-heap-write-in-recvolumes5-readheader"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:5b1b70e1ec8067c016a3905457499c37a8310cafc5928eb837662abc38ac0b7e · sha256:0619b9858e660d13… · /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.

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