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CVE-2026-37535

openxc/isotp-c thru commit 5a5d19245f65189202719321facd49ce6f5d46ac (2021-08-09) contains an out-of-bounds read in the ISO-TP Single Frame receive handler, where the 4-bit payload length nibble is used directly as the memcpy size without validating it against the actual CAN data length. A malicious CAN frame with an oversized length nibble can cause memory reads beyond the buffer, allowing attackers to cause a denial of service, or gain sensitive information.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:c347eeb6f67a42b2f0d6dc9a2271a097859cfc36cc302dbd3bedb93c1bb03227
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

{"cweId":"CWE-125","description":"CWE-125 Out-of-bounds Read","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:67d2ee37a90931a59f1baff9bf980bb8b5753b8d317bad706e3953a22a76a347 · sha256:14b009675ed03b0e… · /containers/adp/0/problemTypes/0/descriptions/0

{"description":"n/a","lang":"en","type":"text"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:67d2ee37a90931a59f1baff9bf980bb8b5753b8d317bad706e3953a22a76a347 · sha256:14b009675ed03b0e… · /containers/cna/problemTypes/0/descriptions/0

Affected products and versions

1 source assertion
{"product":"n/a","vendor":"n/a","versions":[{"status":"affected","version":"n/a"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:67d2ee37a90931a59f1baff9bf980bb8b5753b8d317bad706e3953a22a76a347 · sha256:14b009675ed03b0e… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"ADJACENT_NETWORK","availabilityImpact":"HIGH","baseScore":7.1,"baseSeverity":"HIGH","confidentialityImpact":"LOW","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AC:L/AV:A/A:H/C:L/I:N/PR:N/S:U/UI:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:67d2ee37a90931a59f1baff9bf980bb8b5753b8d317bad706e3953a22a76a347 · sha256:14b009675ed03b0e… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

2 source assertions
{"cweId":"CWE-125","description":"CWE-125 Out-of-bounds Read","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:67d2ee37a90931a59f1baff9bf980bb8b5753b8d317bad706e3953a22a76a347 · sha256:14b009675ed03b0e… · /containers/adp/0/problemTypes/0/descriptions/0
{"description":"n/a","lang":"en","type":"text"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:67d2ee37a90931a59f1baff9bf980bb8b5753b8d317bad706e3953a22a76a347 · sha256:14b009675ed03b0e… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions
{"url":"https://gist.github.com/sgInnora/f4ac66faeefe07a653ceeb3f58cdc381"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:67d2ee37a90931a59f1baff9bf980bb8b5753b8d317bad706e3953a22a76a347 · sha256:14b009675ed03b0e… · /containers/cna/references/2
{"url":"https://github.com/openxc/isotp-c"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:67d2ee37a90931a59f1baff9bf980bb8b5753b8d317bad706e3953a22a76a347 · sha256:14b009675ed03b0e… · /containers/cna/references/0
{"url":"https://github.com/openxc/isotp-c/blob/master/src/isotp/receive.c"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:67d2ee37a90931a59f1baff9bf980bb8b5753b8d317bad706e3953a22a76a347 · sha256:14b009675ed03b0e… · /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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