Analysis and contextual insights are available on OpenCVE Cloud.
No solution or workaround provided in the CVE record.
Additional remediation guidance may be available on OpenCVE Cloud.
Tracking
Sign in to view the affected projects.
| Source | ID | Title |
|---|---|---|
Debian DSA |
DSA-6265-1 | exim4 security update |
Ubuntu USN |
USN-8228-1 | Exim vulnerabilities |
Ubuntu USN |
USN-8382-1 | Exim vulnerabilities |
Sat, 02 May 2026 10:30:00 +0200
| Type | Values Removed | Values Added |
|---|---|---|
| Title | Exim Out-of-Bounds Heap Write in JSON Lookup |
Fri, 01 May 2026 20:00:00 +0200
| Type | Values Removed | Values Added |
|---|---|---|
| Weaknesses | CWE-787 |
Fri, 01 May 2026 17:15:00 +0200
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
Fri, 01 May 2026 07:45:00 +0200
| Type | Values Removed | Values Added |
|---|---|---|
| Title | Exim Out-of-Bounds Heap Write in JSON Lookup |
Fri, 01 May 2026 04:30:00 +0200
| Type | Values Removed | Values Added |
|---|---|---|
| References |
|
Fri, 01 May 2026 04:00:00 +0200
| Type | Values Removed | Values Added |
|---|---|---|
| References |
|
Thu, 30 Apr 2026 23:45:00 +0200
| Type | Values Removed | Values Added |
|---|---|---|
| Description | In Exim before 4.99.2, when JSON lookup is enabled, an out-of-bounds heap write can occur when a JSON operator encounters malformed JSON in an untrusted header, because of an incorrect implementation of \ skipping. | |
| First Time appeared |
Exim
Exim exim |
|
| Weaknesses | CWE-684 | |
| CPEs | cpe:2.3:a:exim:exim:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Exim
Exim exim |
|
| References |
| |
| Metrics |
cvssV3_1
|
Status: PUBLISHED
Assigner: mitre
Published:
Updated: 2026-05-01T14:26:41.873Z
Reserved: 2026-04-14T00:00:00.000Z
Link: CVE-2026-40685
Updated: 2026-05-01T14:26:38.069Z
Status : Analyzed
Published: 2026-04-30T22:16:25.633
Modified: 2026-06-17T10:45:34.323
Link: CVE-2026-40685
No data.
OpenCVE Enrichment
Updated: 2026-05-02T10:15:16Z
Debian DSA
Ubuntu USN