Exim vulnerabilities
- Exim has 22 CVE records published between 28 Oct 2023 and 28 Oct 2026, ranking #244 of 420 vendors on this site by that count.
- Of the 22 with a CVSS score, 12 (54.5%) are rated critical or high; 0 (0% of all) have no CVSS score.
- 5 vulnerabilities attributed to Exim are listed in CISA's Known Exploited Vulnerabilities (KEV) catalog; the most recent, CVE-2010-4344, was added on 25 Mar 2022.
- 1 of them (20%) is marked as known to be used in ransomware campaigns.
- For the 5 KEV entries with a published CVE record, the median time from CVE publication to KEV listing is 1,364 days.
Records are attributed to Exim from the vendor named in the source records. About the data.
CVE records per year
Show data as a table
| Year | CVE records |
|---|---|
| 2017 | 0 |
| 2018 | 1 |
| 2019 | 2 |
| 2020 | 0 |
| 2021 | 0 |
| 2022 | 0 |
| 2023 | 0 |
| 2024 | 7 |
| 2025 | 3 |
| 2026 | 12 |
2026 is partial (through 28 Oct 2026), shown in a lighter bar.
| Year | Records | Critical | High | Critical or high | Not scored |
|---|---|---|---|---|---|
| 2026 | 12 | 1 | 4 | 41.7% | 0% |
| 2025 | 3 | 0 | 3 | 100% | 0% |
| 2024 | 7 | 1 | 3 | 57.1% | 0% |
| 2023 | 0 | 0 | 0 | — | — |
| 2022 | 0 | 0 | 0 | — | — |
| 2021 | 0 | 0 | 0 | — | — |
| 2020 | 0 | 0 | 0 | — | — |
| 2019 | 2 | 2 | 0 | 100% | 0% |
| 2018 | 1 | 1 | 0 | 100% | 0% |
| 2017 | 0 | 0 | 0 | — | — |
| Before 2017 | 2 | ||||
Source: CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026. About the data.
Exploited vulnerabilities in CISA's KEV catalog
| CVE | Product | Name | Added | Ransomware |
|---|---|---|---|---|
| CVE-2010-4344 | Exim | Exim Heap-Based Buffer Overflow Vulnerability | 2022-03-25 | Unknown |
| CVE-2010-4345 | Exim | Exim Privilege Escalation Vulnerability | 2022-03-25 | Unknown |
| CVE-2019-16928 | Exim Internet Mailer | Exim Out-of-bounds Write Vulnerability | 2022-03-03 | Unknown |
| CVE-2019-10149 | Mail Transfer Agent (MTA) | Exim Mail Transfer Agent (MTA) Improper Input Validation | 2022-01-10 | Unknown |
| CVE-2018-6789 | Exim | Exim Buffer Overflow Vulnerability | 2021-11-03 | Known |
Source: CISA Known Exploited Vulnerabilities (KEV) catalog, 2026.10.27, as of 27 Oct 2026. About the data.
Highest exploit-prediction scores (EPSS)
EPSS estimates the probability that a vulnerability is exploited in the next 30 days. These are the 10 highest-scoring Exim records today.
| CVE | EPSS | Percentile | Severity | In KEV |
|---|---|---|---|---|
| CVE-2019-10149 | 100% | 100% | Critical | Yes |
| CVE-2018-6789 | 82.1% | 99.7% | Critical | Yes |
| CVE-2025-26794 | 77.5% | 99.6% | High | No |
| CVE-2010-4344 | 71.7% | 99.4% | Critical | Yes |
| CVE-2019-16928 | 41.6% | 98.7% | Critical | Yes |
| CVE-2024-39929 | 41.5% | 98.7% | Medium | No |
| CVE-2023-42114 | 27.1% | 98% | Low | No |
| CVE-2010-4345 | 18% | 97.2% | High | Yes |
| CVE-2023-42115 | 12.2% | 96.1% | Critical | No |
| CVE-2023-42118 | 8.4% | 95% | High | No |
Source: FIRST Exploit Prediction Scoring System (EPSS), v2026.06.15, as of 28 Oct 2026; CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026; CISA Known Exploited Vulnerabilities (KEV) catalog, 2026.10.27, as of 27 Oct 2026. About the data.