ESPTouch is a connection protocol for internet of things devices. In the ESPTouchV2 protocol, while there is an option to use a custom AES key, there is no option to set the IV (Initialization Vector) prior to versions 5.3.2, 5.2.4, 5.1.6, and 5.0.8. The IV is set to zero and remains constant throughout the product's lifetime. In AES/CBC mode, if the IV is not properly initialized, the encrypted output becomes deterministic, leading to potential data leakage. To address the aforementioned issues, the application generates a random IV when activating the AES key starting in versions 5.3.2, 5.2.4, 5.1.6, and 5.0.8. This IV is then transmitted along with the provision data to the provision device. The provision device has also been equipped with a parser for the AES IV. The upgrade is applicable for all applications and users of ESPTouch v2 component from ESP-IDF. As it is implemented in the ESP Wi-Fi stack, there is no workaround for the user to fix the application layer without upgrading the underlying firmware.
CVE-2024-53845
“—” beside the score: it is equal to NVD's CVSS score.
This medium-severity CVE scores 6.6 under NVD CVSS v3. EPSS exploit probability: 0.6% (48th percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.
Also known asEUVD-2024-52171 (ENISA EUVD)Source: ENISA EUVD
- Lower severity and no public exploit yet
No fix is confirmed yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for the fix.
The CVE record's description, written by its CNA (GitHub, Inc.), states the affected versions: "In the ESPTouchV2 protocol, while there is an option to use a custom AES key, there is no option to set the IV (Initialization Vector) prior to versions 5.3.2, 5.2.4, 5.1.6, and 5.0.8." No release containing a fix is confirmed on record.
- CVSS v3
- 6.6
- EG Score
- 6.6MEDIUMmedium confidence
- EG Risk
- 30EG Risk 30/100
EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.
How it’s computed (value × EchelonGraph’s weight)Severity66% × 45%Impact severity (EG Severity): CVSS 6.6 of 10. Never the KEV-floored or EPSS-lifted EG Score.Exploitation0.6% × 40%FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.Automatability0% × 15%CISA's SSVC Automatable value: no (Vulnrichment).SSVC (CISA's decision table, applied by EchelonGraph): Track at every mission impact level.Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.Action: No fix is confirmed yet. Check with the vendor for a fixed release; until one is applied, restrict network exposure of the affected system on your normal schedule. - EPSS PROB
- 0.6%
- EPSS %ILE
- 48th
- KEV
- Not listed
What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)
The EG score (6.6): severity, escalated by confirmed exploitation. This CVE's 6.6 is its impact severity (EG Severity), not escalated.
- EG Severity
- 6.6 MEDIUMCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.NVD CVSS v3 · CVSS v3.0 or v3.1
- EG Likelihood
- 0.6% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-25). FIRST's exploitation probability, not an EchelonGraph model.
- Confirmed exploitation
- None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
- EG Priority
- SSVC Track at medium mission impactTrack at every mission impact level.CISA BOD 26-04: 60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.No released fix is confirmed on this page, but CISA's timeline does not wait for a fix's release: it starts when an agency identifies the flaw on an asset and updates the CDM Agency and Federal Dashboard, and the directive counts patching, decommissioning the system or another action as remediation. Until a fixed release is applied, mitigate as this page's verdict says. In the directive's words, “Fix on system upgrade” means that, “unless conditions change”, the vulnerability “should be remediated the next time the vulnerable asset receives a scheduled major upgrade or rebuild”: its timelines are “dynamic as facts change”, and a KEV listing shortens them.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.
SSVC (CISA's decision table, applied by EchelonGraph)Track at every mission impact level.
No fix is confirmed yet. Check with the vendor for a fixed release; until one is applied, restrict network exposure of the affected system on your normal schedule.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table
BOD 26-04 (CISA's remediation timeline, Table 1)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.
No released fix is confirmed on this page, but CISA's timeline does not wait for a fix's release: it starts when an agency identifies the flaw on an asset and updates the CDM Agency and Federal Dashboard, and the directive counts patching, decommissioning the system or another action as remediation. Until a fixed release is applied, mitigate as this page's verdict says. In the directive's words, “Fix on system upgrade” means that, “unless conditions change”, the vulnerability “should be remediated the next time the vulnerable asset receives a scheduled major upgrade or rebuild”: its timelines are “dynamic as facts change”, and a KEV listing shortens them.
The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it
Published
December 12, 2024
Last Modified
April 15, 2026
Advisory Details (9)
Auto-updated Oct 24, 2026esp-idf/components/esp_wifi at master · espressif/esp-idf · GitHub
https://github.com/espressif/esp-idf/tree/master/components/esp_wifiAES/CBC Constant IV Vulnerability in ESPTouch v2 · Advisory · espressif/esp-idf · GitHub
https://github.com/espressif/esp-idf/security/advisories/GHSA-wm57-466g-mhrrcommit fd224e83bbf1 (espressif/esp-idf)
Fix landed in espressif/esp-idf commit fd224e83bbf1 — awaiting tagged release
https://github.com/espressif/esp-idf/commit/fd224e83bbf133833638b277c767be7f7cdd97c7commit de69895f38d5 (espressif/esp-idf)
Fix landed in espressif/esp-idf commit de69895f38d5 — awaiting tagged release
https://github.com/espressif/esp-idf/commit/de69895f38d563e22228f5ba23fffa02feabc3a9commit d47ed7d6f814 (espressif/esp-idf)
Fix landed in espressif/esp-idf commit d47ed7d6f814 — awaiting tagged release
https://github.com/espressif/esp-idf/commit/d47ed7d6f814e21c5bc8997ab0bc68e2360e5cb2commit 8fb28dcedcc4 (espressif/esp-idf)
Fix landed in espressif/esp-idf commit 8fb28dcedcc4 — awaiting tagged release
https://github.com/espressif/esp-idf/commit/8fb28dcedcc49916a5206456a3a61022d4302cd8commit 4f85a2726e04 (espressif/esp-idf)
Fix landed in espressif/esp-idf commit 4f85a2726e04 — awaiting tagged release
https://github.com/espressif/esp-idf/commit/4f85a2726e04b737c8646d865b44ddd837b703dbEsptouchForIOS/EspTouchDemo/ESPTouchV2 at master · EspressifApp/EsptouchForIOS · GitHub
https://github.com/EspressifApp/EsptouchForIOS/tree/master/EspTouchDemo/ESPTouchV2EsptouchForAndroid/esptouch-v2 at master · EspressifApp/EsptouchForAndroid · GitHub
https://github.com/EspressifApp/EsptouchForAndroid/tree/master/esptouch-v2Weakness Classification(2)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 7× in last 7d / 37× in last 30d)
Each row is a time one of our pipelines fetched, updated or re-scored this CVE. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.
Showing the most recent 95 of 225 refreshes on record for this CVE.
A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 5 repeat rows among the latest 100 are merged into the row they repeat. The 130 oldest rows on record are not shown and were not checked, so the counts can still include repeats.
- 2026-11-02 16:41 UTCEPSS rescoreEPSS 0.6% · 48th percentile
- 2026-11-01 16:32 UTCEPSS rescoreEPSS 0.6% · 48th percentile
- 2026-10-31 16:30 UTCEPSS rescoreEPSS 0.6% · 48th percentile
- 2026-10-30 16:32 UTCEPSS rescoreEPSS 0.6% · 48th percentile
- 2026-10-29 16:31 UTCEPSS rescoreEPSS 0.6% · 48th percentile
- 2026-10-28 16:30 UTCEPSS rescoreEPSS 0.6% · 48th percentile
- 2026-10-27 16:30 UTCEPSS rescoreEPSS 0.6% · 48th percentile
- 2026-10-26 16:29 UTCEPSS rescoreEPSS 0.6% · 48th percentile
- 2026-10-25 16:56 UTCEG score recompute
- 2026-10-25 16:30 UTCEPSS rescoreEPSS 0.6% · 48th percentile
- 2026-10-24 16:30 UTCEPSS rescoreEPSS 0.6% · 47th percentile
- 2026-10-24 03:15 UTCEG score recompute
- 2026-10-23 16:30 UTCEPSS rescoreEPSS 0.6% · 47th percentile
- 2026-10-22 16:31 UTCEPSS rescoreEPSS 0.6% · 47th percentile
- 2026-10-21 16:30 UTCEPSS rescoreEPSS 0.6% · 47th percentile
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- 2026-10-19 16:30 UTCEPSS rescoreEPSS 0.6% · 47th percentile
- 2026-10-18 16:30 UTCEPSS rescoreEPSS 0.6% · 47th percentile
- 2026-10-18 06:50 UTCEG score recompute
- 2026-10-17 16:31 UTCEPSS rescoreEPSS 0.6% · 47th percentile
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- 2026-10-13 16:31 UTCEPSS rescoreEPSS 0.6% · 47th percentile
- 2026-10-12 17:38 UTCEG score recompute
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- 2026-10-12 16:31 UTCEPSS rescoreEPSS 0.6% · 46th percentile
- 2026-10-11 21:04 UTCEG score recompute
- 2026-10-11 15:56 UTCEG score recompute
- 2026-10-11 13:46 UTCEPSS rescoreEPSS 0.6% · 46th percentile
- 2026-10-10 22:47 UTCOSV refresh
- 2026-10-10 19:58 UTCEPSS rescoreEPSS 0.6% · 46th percentile
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- 2026-10-03 14:24 UTCEPSS rescoreEPSS 0.6% · 46th percentile
- 2026-10-02 16:22 UTCEG score recompute
- 2026-10-01 19:48 UTCEPSS rescoreEPSS 0.6% · 46th percentile
- 2026-09-30 15:02 UTCEPSS rescoreEPSS 0.6% · 46th percentile
- 2026-09-28 13:50 UTCEPSS rescoreEPSS 0.6% · 46th percentile
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- 2026-09-26 15:57 UTCEPSS rescoreEPSS 0.6% · 46th percentile
- 2026-09-24 14:01 UTCEPSS rescoreEPSS 0.6% · 46th percentile
- 2026-09-23 13:46 UTCEPSS rescoreEPSS 0.6% · 47th percentile
- 2026-09-22 14:47 UTCEPSS rescoreEPSS 0.6% · 47th percentile
- 2026-09-21 10:49 UTCOSV refresh
- 2026-09-20 20:14 UTCEPSS rescoreEPSS 0.6% · 47th percentile
- 2026-09-18 19:26 UTCEPSS rescoreEPSS 0.6% · 47th percentile
- 2026-09-16 14:06 UTCEPSS rescoreEPSS 0.6% · 45th percentile
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- 2026-09-13 16:45 UTCEPSS rescoreEPSS 0.6% · 45th percentile
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- 2026-09-11 14:51 UTCEPSS rescoreEPSS 0.6% · 45th percentile
- 2026-09-11 09:35 UTCEPSS rescoreEPSS 0.6% · 45th percentile
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- 2026-09-04 05:05 UTCEPSS rescoreEPSS 0.6% · 45th percentile
- 2026-09-02 14:10 UTCEPSS rescoreEPSS 0.6% · 45th percentile
- 2026-09-02 08:44 UTCOSV refresh
- 2026-09-01 13:52 UTCEPSS rescoreEPSS 0.6% · 44th percentile
- 2026-08-30 19:16 UTCEPSS rescoreEPSS 0.6% · 44th percentile
- 2026-08-30 01:21 UTCEPSS rescoreEPSS 0.6% · 44th percentile
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- 2026-08-27 14:24 UTCEPSS rescoreEPSS 0.6% · 44th percentile
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- 2026-08-16 07:54 UTCOSV refresh
- 2026-08-16 02:13 UTCEPSS rescoreEPSS 0.6% · 44th percentile
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Frequently asked(5)
What is CVE-2024-53845?
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Dependency Blast Radius
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