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CVE-2026-45542

ESF-IDF is the Espressif Internet of Things (IOT) Development Framework. In versions 5.2.6, 5.3.5, 5.4.4, 5.5.4, and 6.0, a heap buffer overflow exists in the Security Scheme 2 (SRP6a) session-setup path of the protocomm component. The first-phase handler (handle_session_command0() in components/protocomm/src/security/security2.c) trusts the length of a client-supplied protobuf field for the SRP6a username and copies it into a buffer whose size is derived from a narrower destination type. The re
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:74adc8676a7e4df9478f44a06857d84b799d67fa5a92c09d6a372f8ce8e21b40
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":"= 5.2.6"},{"status":"affected","version":"= 5.3.5"},{"status":"affected","version":"= 5.4.4"},{"status":"affected","version":"= 5.5.4"},{"status":"affected","version":"= 6.0"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:ddc5c44f0941f1aa8361786506ab042134bce7374bde59821e52335c98583028 · sha256:2db3ca6742bbdd8a… · /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":"NONE","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/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:ddc5c44f0941f1aa8361786506ab042134bce7374bde59821e52335c98583028 · sha256:2db3ca6742bbdd8a… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-122","description":"CWE-122: Heap-based Buffer Overflow","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:ddc5c44f0941f1aa8361786506ab042134bce7374bde59821e52335c98583028 · sha256:2db3ca6742bbdd8a… · /containers/cna/problemTypes/0/descriptions/0

Source references

7 source assertions
{"name":"https://github.com/espressif/esp-idf/commit/0ea58d79845ad674d0358d5de246015a68c4cb4f","tags":["x_refsource_MISC"],"url":"https://github.com/espressif/esp-idf/commit/0ea58d79845ad674d0358d5de246015a68c4cb4f"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:ddc5c44f0941f1aa8361786506ab042134bce7374bde59821e52335c98583028 · sha256:2db3ca6742bbdd8a… · /containers/cna/references/1
{"name":"https://github.com/espressif/esp-idf/commit/56c3e385611e63162d0f2f8504ac4ae2ccfccef0","tags":["x_refsource_MISC"],"url":"https://github.com/espressif/esp-idf/commit/56c3e385611e63162d0f2f8504ac4ae2ccfccef0"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:ddc5c44f0941f1aa8361786506ab042134bce7374bde59821e52335c98583028 · sha256:2db3ca6742bbdd8a… · /containers/cna/references/2
{"name":"https://github.com/espressif/esp-idf/commit/71eb2dbe6aaef830719ecac8edf409e2992b64b2","tags":["x_refsource_MISC"],"url":"https://github.com/espressif/esp-idf/commit/71eb2dbe6aaef830719ecac8edf409e2992b64b2"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:ddc5c44f0941f1aa8361786506ab042134bce7374bde59821e52335c98583028 · sha256:2db3ca6742bbdd8a… · /containers/cna/references/3
{"name":"https://github.com/espressif/esp-idf/commit/9b4cacf9cbc69379972de6a2247fcf5af9240961","tags":["x_refsource_MISC"],"url":"https://github.com/espressif/esp-idf/commit/9b4cacf9cbc69379972de6a2247fcf5af9240961"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:ddc5c44f0941f1aa8361786506ab042134bce7374bde59821e52335c98583028 · sha256:2db3ca6742bbdd8a… · /containers/cna/references/4
{"name":"https://github.com/espressif/esp-idf/commit/a2f4554f10ba075c98cbc67464db096ba32497cf","tags":["x_refsource_MISC"],"url":"https://github.com/espressif/esp-idf/commit/a2f4554f10ba075c98cbc67464db096ba32497cf"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:ddc5c44f0941f1aa8361786506ab042134bce7374bde59821e52335c98583028 · sha256:2db3ca6742bbdd8a… · /containers/cna/references/5
{"name":"https://github.com/espressif/esp-idf/commit/f5d24a7e919bc5f447091479656b86da6762a103","tags":["x_refsource_MISC"],"url":"https://github.com/espressif/esp-idf/commit/f5d24a7e919bc5f447091479656b86da6762a103"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:ddc5c44f0941f1aa8361786506ab042134bce7374bde59821e52335c98583028 · sha256:2db3ca6742bbdd8a… · /containers/cna/references/6
{"name":"https://github.com/espressif/esp-idf/security/advisories/GHSA-9r76-858f-v6jh","tags":["x_refsource_CONFIRM"],"url":"https://github.com/espressif/esp-idf/security/advisories/GHSA-9r76-858f-v6jh"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:ddc5c44f0941f1aa8361786506ab042134bce7374bde59821e52335c98583028 · sha256:2db3ca6742bbdd8a… · /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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