[UPDATE] [medium] Erlang/OTP: Multiple vulnerabilities allow bypassing security measures
A remote, anonymous attacker can exploit multiple vulnerabilities in Erlang/OTP to bypass security measures.
CSIRTS triage
- What
- A remote, anonymous attacker can exploit multiple vulnerabilities in Erlang/OTP to bypass security measures.
- Who is affected
- Deployments of Erlang/OTP.
- Urgency
- Remediation is medium urgency as it allows security measures to be bypassed.
- Action
- Apply security updates to Erlang/OTP as they become available.
AI-assisted analysis generated from the source advisory — verify against the original.
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Details
Original advisory: https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-1719
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Low exploitation riskCVE-2026-427890.33% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 26% of all scored CVEs.
- Low exploitation riskCVE-2026-427900.34% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 26% of all scored CVEs.
- Low exploitation riskCVE-2026-427910.32% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 24% of all scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-42789 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-42790 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-42791 | coverage & exploitation status | NVD · CVE.org |
Same CVEs, other sources
How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.
- unknownMultiple vulnerabilities in Tenable Identity Exposure (June 24, 2026)cert-fr-avis
Recent advisories for Erlang/OTP
A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.
- high[NEW] [high] Erlang/OTP: Multiple vulnerabilitiescert-bund · 2026-07-31
- unknownCVE-2026-59251: Allocation of resources without limits in Erlang/OTP public_key certificate path validation al…nvd · 2026-07-27
- unknownCVE-2026-59250: Classic buffer overflow in the Erlang/OTP megaco flex scanner C driver allows a remote unauthe…nvd · 2026-07-27
- unknownCVE-2026-58227: The Erlang/OTP ssl application does not detect cycles when reconstructing an incomplete peer c…nvd · 2026-07-27
- unknownCVE-2026-55953: The Erlang/OTP ssl TLS 1.2 (and earlier) and DTLS client does not verify that the cipher suite…nvd · 2026-07-27
- unknownCVE-2026-54890: Integer Underflow (Wrap or Wraparound) vulnerability in erlang otp erlang/otp (erts modules), …nvd · 2026-07-27
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