CVE-2026-1425
CVE-2026-1425 is a medium-severity vulnerability with a CVSS 3.x base score of 5.6. 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-119.
Key facts
- Severity: Medium (CVSS 3.x base score 5.6)
- CVSS v2: 5.1
- CVSS v4: 6.3
- EPSS exploit prediction: 0% (29th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-4706
- Weakness: CWE-119
- Published:
- Last modified:
Description
A security flaw has been discovered in pymumu SmartDNS up to 47.1. This vulnerability affects the function _dns_decode_rr_head/_dns_decode_SVCB_HTTPS of the file src/dns.c of the component SVBC Record Parser. The manipulation results in stack-based buffer overflow. It is possible to launch the attack remotely. A high complexity level is associated with this attack. It is stated that the exploitability is difficult. The patch is identified as 2d57c4b4e1add9b4537aeb403f794a084727e1c8. Applying a patch is advised to resolve this issue.
Frequently asked questions
- What is CVE-2026-1425?
- A security flaw has been discovered in pymumu SmartDNS up to 47.1. This vulnerability affects the function _dns_decode_rr_head/_dns_decode_SVCB_HTTPS of the file src/dns.c of the component SVBC Record Parser. The manipulation results in stack-based buffer overflow. It is possible to launch the attack remotely. A high complexity level is associated with this attack. It is stated that the exploitability is difficult. The patch is identified as 2d57c4b4e1add9b4537aeb403f794a084727e1c8. Applying a patch is advised to resolve this issue.
- How severe is CVE-2026-1425?
- CVE-2026-1425 has a CVSS 3.x base score of 5.6, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
- Is CVE-2026-1425 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (29th percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2026-1425?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- Does CVE-2026-1425 have an EU (EUVD) identifier?
- Yes. CVE-2026-1425 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-4706.
- When was CVE-2026-1425 published?
- CVE-2026-1425 was published on 2026-01-26 and last updated on 2026-06-17.
References
- https://github.com/pymumu/smartdns/
- https://github.com/pymumu/smartdns/commit/2d57c4b4e1add9b4537aeb403f794a084727e1c8
- https://vuldb.com/?ctiid.342841
- https://vuldb.com/?id.342841
- https://vuldb.com/?submit.736827
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