CVE-2026-94055
CVE-2026-94055 is a low-severity vulnerability in Exim with a CVSS 3.x base score of 3.7. 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-416.
Key facts
- Severity: Low (CVSS 3.x base score 3.7)
- EPSS exploit prediction: 0% (19th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-416
- Affected product: Exim
- Published:
- Last modified:
Description
Exim before 4.100.1, when certain non-default TLS settings are used with GnuTLS, has a use-after-free.
Frequently asked questions
- What is CVE-2026-94055?
- Exim before 4.100.1, when certain non-default TLS settings are used with GnuTLS, has a use-after-free.
- How severe is CVE-2026-94055?
- CVE-2026-94055 has a CVSS 3.x base score of 3.7, rated low severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.
- Is CVE-2026-94055 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (19th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-94055?
- CVE-2026-94055 affects Exim. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2026-94055?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2026-94055 published?
- CVE-2026-94055 was published on 2026-09-19 and last updated on 2026-09-24.
References
Affected products (1)
- cpe:2.3:a:exim:exim:*:*:*:*:*:*:*:*
More vulnerabilities in Exim
- CVE-2026-45185 — Critical (CVSS 9.8): Exim before 4.99.3, in certain GnuTLS configurations, has a remotely reachable use-after-free in the BDAT body parsing…
- CVE-2023-42117 — Critical (CVSS 9.8): Exim Improper Neutralization of Special Elements Remote Code Execution Vulnerability. This vulnerability allows remote…
- CVE-2023-42116 — Critical (CVSS 9.8): Exim SMTP Challenge Stack-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote…
- CVE-2023-42115 — Critical (CVSS 9.8): Exim AUTH Out-Of-Bounds Write Remote Code Execution Vulnerability. This vulnerability allows remote attackers to…
- CVE-2022-37452 — Critical (CVSS 9.8): Exim before 4.95 has a heap-based buffer overflow for the alias list in host_name_lookup in host.c when…
- CVE-2020-28026 — Critical (CVSS 9.8): Exim 4 before 4.94.2 has Improper Neutralization of Line Delimiters, relevant in non-default configurations that enable…
Other CWE-416 (Use After Free) vulnerabilities
- CVE-2026-63795 — Critical (CVSS 10.0): In the Linux kernel, the following vulnerability has been resolved: 9p: avoid putting oldfid in p9_client_walk() error…
- CVE-2026-13782 — Critical (CVSS 10.0): Use after free in Browser in Google Chrome prior to 150.0.7871.47 allowed a remote attacker who had compromised the…
- CVE-2026-4725 — Critical (CVSS 10.0): Sandbox escape due to use-after-free in the Graphics: Canvas2D component. This vulnerability was fixed in Firefox 149…
- CVE-2026-4688 — Critical (CVSS 10.0): Sandbox escape due to use-after-free in the Disability Access APIs component. This vulnerability was fixed in Firefox…
- CVE-2025-24085 — Critical (CVSS 10.0): A use after free issue was addressed with improved memory management. This issue is fixed in iOS 18.3 and iPadOS 18.3,…
- CVE-2024-43102 — Critical (CVSS 10.0): Concurrent removals of certain anonymous shared memory mappings by using the UMTX_SHM_DESTROY sub-request of…
Browse all CWE-416 (Use After Free) vulnerabilities →
Threat intelligence
Threat-intel indicators referencing this CVE:
- 64.23.143.231 (ipv4-addr)
- 103.212.120.214 (ipv4-addr)
- 103.24.12.154 (ipv4-addr)
- 182.160.155.166 (ipv4-addr)
- 23.235.194.34 (ipv4-addr)
- 113.197.39.61 (ipv4-addr)
- 67.43.6.125 (ipv4-addr)
- 67.43.15.13 (ipv4-addr)