CVE Explorer

CVE-2026-42250

bzip2 contains an off‑by‑one error in the bzip2recover utility. When processing a specially crafted file, the application performs an out‑of‑bounds write to a global buffer, resulting in memory corruption and a crash (denial of service). This issue was fixed in bzip2 patch 35d122a3df8b0cc4082a4d89fdc6ee99f375fe67

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:5646e05480686309e8a6f30f984f42f2f651b7243ebd95aa2860613d92c7e528

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Affected products and versions

1 source assertion

{"defaultStatus":"unaffected","product":"bzip2","repo":"https://gitlab.com/federicomenaquintero/bzip2","vendor":"bzip2","versions":[{"lessThanOrEqual":"1.0.8","status":"affected","version":"0","versionType":"semver"},{"status":"unaffected","version":"35d122a3df8b0cc4082a4d89fdc6ee99f375fe67","versionType":"custom"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:b189e3a2cf270b5e99f7e9334bc2f6879084f9b57081b930e1ba637171ad166b · sha256:503cbf287354b7ca… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"LOCAL","baseScore":4.8,"baseSeverity":"MEDIUM","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"PASSIVE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"LOW","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"N…

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:b189e3a2cf270b5e99f7e9334bc2f6879084f9b57081b930e1ba637171ad166b · sha256:503cbf287354b7ca… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion

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

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:b189e3a2cf270b5e99f7e9334bc2f6879084f9b57081b930e1ba637171ad166b · sha256:503cbf287354b7ca… · /containers/cna/problemTypes/0/descriptions/0

Source references

4 source assertions

{"tags":["third-party-advisory"],"url":"https://cert.pl/en/posts/2026/05/CVE-2026-42250/"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:b189e3a2cf270b5e99f7e9334bc2f6879084f9b57081b930e1ba637171ad166b · sha256:503cbf287354b7ca… · /containers/cna/references/0

{"tags":["vendor-advisory"],"url":"https://inbox.sourceware.org/bzip2-devel/20260528145407.293768-1-mark@klomp.org/"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:b189e3a2cf270b5e99f7e9334bc2f6879084f9b57081b930e1ba637171ad166b · sha256:503cbf287354b7ca… · /containers/cna/references/2

{"tags":["product"],"url":"https://sourceware.org/bzip2/"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:b189e3a2cf270b5e99f7e9334bc2f6879084f9b57081b930e1ba637171ad166b · sha256:503cbf287354b7ca… · /containers/cna/references/1

{"tags":["patch"],"url":"https://sourceware.org/cgit/bzip2/commit/?id=35d122a3df8b0cc4082a4d89fdc6ee99f375fe67"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:b189e3a2cf270b5e99f7e9334bc2f6879084f9b57081b930e1ba637171ad166b · sha256:503cbf287354b7ca… · /containers/cna/references/3

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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