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CVE-2026-25532

ESF-IDF is the Espressif Internet of Things (IOT) Development Framework. In versions 5.5.2, 5.4.3, 5.3.4, 5.2.6, and 5.1.6, a vulnerability exists in the WPS (Wi-Fi Protected Setup) Enrollee implementation where malformed EAP-WSC packets with truncated payloads can cause integer underflow during fragment length calculation. When processing EAP-Expanded (WSC) messages, the code computes frag_len by subtracting header sizes from the total packet length. If an attacker sends a packet where the EAP
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:4331ed7d55f3a8e8f290dec638e706f4117c6ce0f0ea08b542e4d8144c06eeed
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"esp-idf","vendor":"espressif","versions":[{"status":"affected","version":"= 5.5.2"},{"status":"affected","version":"= 5.4.3"},{"status":"affected","version":"= 5.3.4"},{"status":"affected","version":"= 5.2.6"},{"status":"affected","version":"= 5.1.6"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:9e4481f0b38455cd2406257dfcdbb2263be7d96e9a7b77b484c11ed8bacba319 · sha256:553c7c34d045527b… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"ADJACENT_NETWORK","availabilityImpact":"HIGH","baseScore":6.3,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:9e4481f0b38455cd2406257dfcdbb2263be7d96e9a7b77b484c11ed8bacba319 · sha256:553c7c34d045527b… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-191","description":"CWE-191: Integer Underflow (Wrap or Wraparound)","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:9e4481f0b38455cd2406257dfcdbb2263be7d96e9a7b77b484c11ed8bacba319 · sha256:553c7c34d045527b… · /containers/cna/problemTypes/0/descriptions/0

Source references

8 source assertions
{"name":"https://github.com/espressif/esp-idf/commit/60f992a26de17bb5406f2149a2f8282dd7ad1c59","tags":["x_refsource_MISC"],"url":"https://github.com/espressif/esp-idf/commit/60f992a26de17bb5406f2149a2f8282dd7ad1c59"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:9e4481f0b38455cd2406257dfcdbb2263be7d96e9a7b77b484c11ed8bacba319 · sha256:553c7c34d045527b… · /containers/cna/references/1
{"name":"https://github.com/espressif/esp-idf/commit/6f6766f917bc940ffbcc97eac4765a6ab15d5f79","tags":["x_refsource_MISC"],"url":"https://github.com/espressif/esp-idf/commit/6f6766f917bc940ffbcc97eac4765a6ab15d5f79"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:9e4481f0b38455cd2406257dfcdbb2263be7d96e9a7b77b484c11ed8bacba319 · sha256:553c7c34d045527b… · /containers/cna/references/2
{"name":"https://github.com/espressif/esp-idf/commit/73a587d42a57ece1962b6a4c530b574600650f63","tags":["x_refsource_MISC"],"url":"https://github.com/espressif/esp-idf/commit/73a587d42a57ece1962b6a4c530b574600650f63"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:9e4481f0b38455cd2406257dfcdbb2263be7d96e9a7b77b484c11ed8bacba319 · sha256:553c7c34d045527b… · /containers/cna/references/3
{"name":"https://github.com/espressif/esp-idf/commit/b209fae993d795255827ce6b2b0d6942a377f5d4","tags":["x_refsource_MISC"],"url":"https://github.com/espressif/esp-idf/commit/b209fae993d795255827ce6b2b0d6942a377f5d4"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:9e4481f0b38455cd2406257dfcdbb2263be7d96e9a7b77b484c11ed8bacba319 · sha256:553c7c34d045527b… · /containers/cna/references/4
{"name":"https://github.com/espressif/esp-idf/commit/b88befde6b5addcdd8d7373ce55c8052dea1e855","tags":["x_refsource_MISC"],"url":"https://github.com/espressif/esp-idf/commit/b88befde6b5addcdd8d7373ce55c8052dea1e855"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:9e4481f0b38455cd2406257dfcdbb2263be7d96e9a7b77b484c11ed8bacba319 · sha256:553c7c34d045527b… · /containers/cna/references/5
{"name":"https://github.com/espressif/esp-idf/commit/cad36beb4cde27abcf316cd90d8d8dddbc6f213a","tags":["x_refsource_MISC"],"url":"https://github.com/espressif/esp-idf/commit/cad36beb4cde27abcf316cd90d8d8dddbc6f213a"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:9e4481f0b38455cd2406257dfcdbb2263be7d96e9a7b77b484c11ed8bacba319 · sha256:553c7c34d045527b… · /containers/cna/references/6
{"name":"https://github.com/espressif/esp-idf/commit/de28801e8ea6a736b6f0db6fc0c682739363bb41","tags":["x_refsource_MISC"],"url":"https://github.com/espressif/esp-idf/commit/de28801e8ea6a736b6f0db6fc0c682739363bb41"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:9e4481f0b38455cd2406257dfcdbb2263be7d96e9a7b77b484c11ed8bacba319 · sha256:553c7c34d045527b… · /containers/cna/references/7
{"name":"https://github.com/espressif/esp-idf/security/advisories/GHSA-m2h2-683f-9mw7","tags":["x_refsource_CONFIRM"],"url":"https://github.com/espressif/esp-idf/security/advisories/GHSA-m2h2-683f-9mw7"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:9e4481f0b38455cd2406257dfcdbb2263be7d96e9a7b77b484c11ed8bacba319 · sha256:553c7c34d045527b… · /containers/cna/references/0

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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