- 5.3MediumCVSS base score
- 0.66%Exploitation in 30 daysEPSS · top 48% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
There exists use-after-free vulnerabilities in lighttpd <= 1.4.50 request parsing which might read from invalid pointers to memory used in the same request, not from other requests.
Timeline
ID reserved
By certcc
Published
- 15 months later
· 15 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| CISA-ADPADP (enrichment) | 3.1 | Medium5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
| NVDNVD · Deferred | 3.1 | Medium5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
- EPSS (exploitation in 30 days)
- 0.66% · top 48% of all CVEs (10 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.3.
Affected products
References
6
- https://blogvdoo.wordpress.com/2018/11/06/giving-back-securing-open-source-iot-projects/#more-736 (opens in a new tab)x_transferred
- https://www.runzero.com/blog/lighttpd/ (opens in a new tab)x_transferred
- https://github.com/lighttpd/lighttpd1.4/commit/df8e4f95614e476276a55e34da2aa8b00b1148e9 (opens in a new tab)x_transferred
- https://github.com/lighttpd/lighttpd1.4/commit/d161f53de04bc826ce1bdaeb3dce2c72ca50a3f8 (opens in a new tab)x_transferred
- https://9443417.fs1.hubspotusercontent-na1.net/hubfs/9443417/Security%20Advisories/2024/AMI-SA-2024002.pdf (opens in a new tab)x_transferred
- https://www.kb.cert.org/vuls/id/312260 (opens in a new tab)x_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2018-21592 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2018-25103)Record last updated .