CVE•Published 2026-05-30•Modified 2026-07-22•0 articles on news•5 live references•NVD data
CVE-2026-48840Exim · Exim
Vulnerability data via NVD (ingested)
CVSS v3.1
5.3
MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
EPSS percentile
18
Exploit Prediction Scoring System · top 82% of all CVEs
Weaknesses (CWE)
Description
Exim 4.88 before 4.99.4, in some proxy configurations, mishandles certain short payloads, leading to disclosure of uninitialized stack memory values to a client.
Timeline
Published 2026-05-30
Modified 2026-07-22
External references
Search for exposed instances
Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).
Shodan · vuln tag431,970 hosts
vuln:CVE-2026-48840Hosts Shodan has explicitly fingerprinted as vulnerable.
Shodan · product
product:"Exim Exim"All exposed Exim Exim instances — cross-reference with the CVE's affected-version range.
Shodan · banner/body mention
http.html:"Exim"HTTP body or banner mentions "Exim" — catches deploys Shodan didn't identify as a product.
More intel sources (5)
Shodan report
vuln:CVE-2026-48840Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-48840Censys host search filtered to this CVE id.
grep.app
CVE-2026-48840Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-48840GitHub code search for direct mentions.
Google dork
"CVE-2026-48840" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub
No public proof-of-concept repositories found for CVE-2026-48840 on GitHub.
We haven't classified any articles referencing CVE-2026-48840 yet. The external references above still apply.