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CVE-2026-8784

A vulnerability was detected in npitre cramfs-tools up to 2.2. Affected is the function change_file_status of the file cramfsck.c. Performing a manipulation results in symlink following. The attack requires a local approach. The exploit is now public and may be used. The patch is named b4a3a695c9873f824907bd15659f2a6ac7667b4f. It is recommended to apply a patch to fix this issue.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:15166e26eaed31ff2c098ef300fd34882455e2d2d81e52b5949b7753ccdb22ff
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
2

Preserved source conflicts

No provider value was silently selected as the winner.

cvss · 4 assertions

{"metric":{"baseScore":4,"vectorString":"AV:L/AC:L/Au:M/C:P/I:P/A:P/E:POC/RL:OF/RC:C","version":"2.0"},"metric_type":"cvssV2_0"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:871eea95a42c557a51c6c733c9b80528eae7a7a9330a540d73109ee2dae06790 · sha256:bfbc3d42aa3a17f5… · /containers/cna/metrics/3/cvssV2_0

{"metric":{"baseScore":4.6,"baseSeverity":"MEDIUM","vectorString":"CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P","version":"4.0"},"metric_type":"cvssV4_0"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:871eea95a42c557a51c6c733c9b80528eae7a7a9330a540d73109ee2dae06790 · sha256:bfbc3d42aa3a17f5… · /containers/cna/metrics/0/cvssV4_0

{"metric":{"baseScore":4.2,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C","version":"3.1"},"metric_type":"cvssV3_1"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:871eea95a42c557a51c6c733c9b80528eae7a7a9330a540d73109ee2dae06790 · sha256:bfbc3d42aa3a17f5… · /containers/cna/metrics/1/cvssV3_1

{"metric":{"baseScore":4.2,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C","version":"3.0"},"metric_type":"cvssV3_0"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:871eea95a42c557a51c6c733c9b80528eae7a7a9330a540d73109ee2dae06790 · sha256:bfbc3d42aa3a17f5… · /containers/cna/metrics/2/cvssV3_0
cwe · 2 assertions

{"cweId":"CWE-59","description":"Link Following","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:871eea95a42c557a51c6c733c9b80528eae7a7a9330a540d73109ee2dae06790 · sha256:bfbc3d42aa3a17f5… · /containers/cna/problemTypes/1/descriptions/0

{"cweId":"CWE-61","description":"Symlink Following","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:871eea95a42c557a51c6c733c9b80528eae7a7a9330a540d73109ee2dae06790 · sha256:bfbc3d42aa3a17f5… · /containers/cna/problemTypes/0/descriptions/0

Affected products and versions

1 source assertion
{"cpes":["cpe:2.3:a:npitre:cramfs-tools:*:*:*:*:*:*:*:*"],"product":"cramfs-tools","vendor":"npitre","versions":[{"status":"affected","version":"2.0"},{"status":"affected","version":"2.1"},{"status":"affected","version":"2.2"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:871eea95a42c557a51c6c733c9b80528eae7a7a9330a540d73109ee2dae06790 · sha256:bfbc3d42aa3a17f5… · /containers/cna/affected/0

Provider-owned CVSS observations

4 source assertions
{"metric":{"baseScore":4,"vectorString":"AV:L/AC:L/Au:M/C:P/I:P/A:P/E:POC/RL:OF/RC:C","version":"2.0"},"metric_type":"cvssV2_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:871eea95a42c557a51c6c733c9b80528eae7a7a9330a540d73109ee2dae06790 · sha256:bfbc3d42aa3a17f5… · /containers/cna/metrics/3/cvssV2_0
{"metric":{"baseScore":4.6,"baseSeverity":"MEDIUM","vectorString":"CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P","version":"4.0"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:871eea95a42c557a51c6c733c9b80528eae7a7a9330a540d73109ee2dae06790 · sha256:bfbc3d42aa3a17f5… · /containers/cna/metrics/0/cvssV4_0
{"metric":{"baseScore":4.2,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:871eea95a42c557a51c6c733c9b80528eae7a7a9330a540d73109ee2dae06790 · sha256:bfbc3d42aa3a17f5… · /containers/cna/metrics/1/cvssV3_1
{"metric":{"baseScore":4.2,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C","version":"3.0"},"metric_type":"cvssV3_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:871eea95a42c557a51c6c733c9b80528eae7a7a9330a540d73109ee2dae06790 · sha256:bfbc3d42aa3a17f5… · /containers/cna/metrics/2/cvssV3_0

CWE assertions

2 source assertions
{"cweId":"CWE-59","description":"Link Following","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:871eea95a42c557a51c6c733c9b80528eae7a7a9330a540d73109ee2dae06790 · sha256:bfbc3d42aa3a17f5… · /containers/cna/problemTypes/1/descriptions/0
{"cweId":"CWE-61","description":"Symlink Following","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:871eea95a42c557a51c6c733c9b80528eae7a7a9330a540d73109ee2dae06790 · sha256:bfbc3d42aa3a17f5… · /containers/cna/problemTypes/0/descriptions/0

Source references

7 source assertions
{"tags":["product"],"url":"https://github.com/npitre/cramfs-tools/"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:871eea95a42c557a51c6c733c9b80528eae7a7a9330a540d73109ee2dae06790 · sha256:bfbc3d42aa3a17f5… · /containers/cna/references/6
{"tags":["patch"],"url":"https://github.com/npitre/cramfs-tools/commit/b4a3a695c9873f824907bd15659f2a6ac7667b4f"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:871eea95a42c557a51c6c733c9b80528eae7a7a9330a540d73109ee2dae06790 · sha256:bfbc3d42aa3a17f5… · /containers/cna/references/5
{"tags":["exploit","issue-tracking"],"url":"https://github.com/npitre/cramfs-tools/issues/13"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:871eea95a42c557a51c6c733c9b80528eae7a7a9330a540d73109ee2dae06790 · sha256:bfbc3d42aa3a17f5… · /containers/cna/references/3
{"tags":["issue-tracking"],"url":"https://github.com/npitre/cramfs-tools/issues/13#issuecomment-4306102583"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:871eea95a42c557a51c6c733c9b80528eae7a7a9330a540d73109ee2dae06790 · sha256:bfbc3d42aa3a17f5… · /containers/cna/references/4
{"name":"Submit #811897 | GNU cramfs-tools below v2.2 Symlink Following","tags":["third-party-advisory"],"url":"https://vuldb.com/submit/811897"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:871eea95a42c557a51c6c733c9b80528eae7a7a9330a540d73109ee2dae06790 · sha256:bfbc3d42aa3a17f5… · /containers/cna/references/2
{"name":"VDB-364408 | npitre cramfs-tools cramfsck.c change_file_status symlink","tags":["vdb-entry","technical-description"],"url":"https://vuldb.com/vuln/364408"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:871eea95a42c557a51c6c733c9b80528eae7a7a9330a540d73109ee2dae06790 · sha256:bfbc3d42aa3a17f5… · /containers/cna/references/0
{"name":"VDB-364408 | CTI Indicators (IOB, IOC, IOA)","tags":["signature","permissions-required"],"url":"https://vuldb.com/vuln/364408/cti"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:871eea95a42c557a51c6c733c9b80528eae7a7a9330a540d73109ee2dae06790 · sha256:bfbc3d42aa3a17f5… · /containers/cna/references/1

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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