How severe is CVE-2026-45160?

CVE-2026-45160 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2026-45160 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (16th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-45160?

CVE-2026-45160 primarily affects Espressif Esp-idf. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-45160?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-45160 have an EU (EUVD) identifier?

Yes. CVE-2026-45160 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-35915.

When was CVE-2026-45160 published?

CVE-2026-45160 was published on 2026-06-10 and last updated on 2026-06-17.

CVE-2026-45160

CVE-2026-45160 is a medium-severity vulnerability in Espressif Esp-idf with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-125.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 0% (16th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-35915
Weakness: CWE-125
Affected product: Espressif Esp-idf
Published: 2026-06-10
Last modified: 2026-06-17

Description

ESF-IDF is the Espressif Internet of Things (IOT) Development Framework. In versions 5.2.7, 5.3.5, 5.4.4, 5.5.4, and 6.0.1, an out-of-bounds read flaw exists in the DHCP server option parser (parse_options() in components/lwip/apps/dhcpserver/dhcpserver.c) shipped with ESP-IDF's lwIP component. The parser walks the BOOTP/DHCP options field without validating that each option's length byte and declared payload length stay within the received packet buffer. A crafted DHCP request can cause the parser to read past the end of the options buffer into adjacent heap memory. The issue affects the DHCP server used by ESP-IDF's SoftAP and any configuration where the device runs as a DHCP server on a local network. This issue has been patched in versions 5.2.8, 5.3.6, 5.4.5, 5.5.5, and 6.0.2.

Frequently asked questions

What is CVE-2026-45160?: ESF-IDF is the Espressif Internet of Things (IOT) Development Framework. In versions 5.2.7, 5.3.5, 5.4.4, 5.5.4, and 6.0.1, an out-of-bounds read flaw exists in the DHCP server option parser (parse_options() in components/lwip/apps/dhcpserver/dhcpserver.c) shipped with ESP-IDF's lwIP component. The parser walks the BOOTP/DHCP options field without validating that each option's length byte and declared payload length stay within the received packet buffer. A crafted DHCP request can cause the parser to read past the end of the options buffer into adjacent heap memory. The issue affects the DHCP server used by ESP-IDF's SoftAP and any configuration where the device runs as a DHCP server on a local network. This issue has been patched in versions 5.2.8, 5.3.6, 5.4.5, 5.5.5, and 6.0.2.
How severe is CVE-2026-45160?: CVE-2026-45160 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2026-45160 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (16th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-45160?: CVE-2026-45160 primarily affects Espressif Esp-idf. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-45160?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-45160 have an EU (EUVD) identifier?: Yes. CVE-2026-45160 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-35915.
When was CVE-2026-45160 published?: CVE-2026-45160 was published on 2026-06-10 and last updated on 2026-06-17.

References

Affected products (5)

cpe:2.3:a:espressif:esp-idf:5.2.7:*:*:*:*:*:*:*
cpe:2.3:a:espressif:esp-idf:5.3.5:*:*:*:*:*:*:*
cpe:2.3:a:espressif:esp-idf:5.4.4:*:*:*:*:*:*:*
cpe:2.3:a:espressif:esp-idf:5.5.4:*:*:*:*:*:*:*
cpe:2.3:a:espressif:esp-idf:6.0.1:*:*:*:*:*:*:*

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