CVE-2013-4508 [High] | Information Disclosure in Lighttpd

CVE-2013-4508 is rated High Exploit Risk (76/100): CVSS High severity, with medium exploitation likelihood (EPSS 2.63%). 1 public exploit reference(s) are indexed (Exploit-DB). EPSS rose +1.79% over the last day, indicating growing attacker interest. Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

EDB-ID	Source	Kind	Published	Link
—	nvd_ref	exploit_tag		Exploit-DB ↗

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Published

Link

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Exploit-DB ↗

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2026-06-15	0.83%	2.63%	+1.79%
2	2026-04-11	2.91%	0.83%	-2.07%
3	2026-03-04	—	2.91%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2026-06-15

0.83%

2.63%

+1.79%

2026-04-11

2.91%

0.83%

-2.07%

2026-03-04

—

2.91%

—

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
7.5	3.1	HIGH	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N` Click to expand Attack vector (AV:N) Could be attacked over the internet or any normal routed network—not just someone sitting at the machine. Attack complexity (AC:L) Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup. Privileges required (PR:N) No account or special rights needed—anonymous or random user is enough. User interaction (UI:N) Nobody has to click “OK” or open a trap file; it can work without a victim helping. Scope (S:U) Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems. Confidentiality (C:H) Serious risk that confidential data gets exposed in a big way. Integrity (I:N) Data isn’t meaningfully altered or forged. Availability (A:N) Service keeps running; no real outage angle.	3.9	3.6	[email protected]
4.3	2.0	MEDIUM	`AV:N/AC:M/Au:N/C:P/I:N/A:N` Click to expand Access vector (AV:N) Can be exploited remotely over network reachability. Access complexity (AC:M) Exploitation needs some favorable conditions, but not exceptional ones. Authentication (AU:N) No authentication is required. Confidentiality impact (C:P) Partial confidentiality impact. Integrity impact (I:N) No integrity impact. Availability impact (A:N) No availability impact.	8.6	2.9	[email protected]

Base score

Version

Severity

Vector

Exploitability

Impact

Score source

7.5

3.1

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Click to expand

Attack vector (AV:N): Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L): Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N): No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N): Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U): Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H): Serious risk that confidential data gets exposed in a big way.
Integrity (I:N): Data isn’t meaningfully altered or forged.
Availability (A:N): Service keeps running; no real outage angle.

3.9

3.6

[email protected]

4.3

2.0

MEDIUM

AV:N/AC:M/Au:N/C:P/I:N/A:N Click to expand

Access vector (AV:N): Can be exploited remotely over network reachability.
Access complexity (AC:M): Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N): No authentication is required.
Confidentiality impact (C:P): Partial confidentiality impact.
Integrity impact (I:N): No integrity impact.
Availability impact (A:N): No availability impact.

8.6

2.9

[email protected]

OS Trackers for CVE-2013-4508

vendor	priority	summary	link
`debian`	not yet assigned	CVE-2013-4508 not yet assigned priority: Debian including 1 source packages (lighttpd), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5.	https://security-tracker.debian.org/tracker/CVE-2013-4508
`gentoo`	high	CVE-2013-4508: 1 GLSA(s) (201406-10), 1 atom(s) (www-servers/lighttpd); latest impact high.	https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2013-4508
`ubuntu`	medium	CVE-2013-4508 medium priority: Ubuntu including 1 source packages (lighttpd), 13 status rows across 13 suites (lucid, precise, quantal, raring, saucy, trusty, upstream, utopic, vivid, wily, xenial, yakkety, zesty): not-affected 7, ignored 5, released 1.	https://ubuntu.com/security/CVE-2013-4508

Affected software / configurations for CVE-2013-4508

Vendor	Product	Version	Raw CPE
lighttpd	lighttpd	>= 1.4.24, <= 1.4.33	cpe:2.3:a:lighttpd:lighttpd::::::::
debian	debian_linux	6.0	cpe:2.3:o:debian:debian_linux:6.0:::::::*
debian	debian_linux	7.0	cpe:2.3:o:debian:debian_linux:7.0:::::::*
debian	debian_linux	8.0	cpe:2.3:o:debian:debian_linux:8.0:::::::*
opensuse	opensuse	12.2	cpe:2.3:o:opensuse:opensuse:12.2:::::::*
opensuse	opensuse	12.3	cpe:2.3:o:opensuse:opensuse:12.3:::::::*
opensuse	opensuse	13.1	cpe:2.3:o:opensuse:opensuse:13.1:::::::*

References for CVE-2013-4508

URL	Tags
http://download.lighttpd.net/lighttpd/security/lighttpd_sa_2013_01.txt	Exploit Mitigation Vendor Advisory
http://jvn.jp/en/jp/JVN37417423/index.html	Third Party Advisory
http://lists.opensuse.org/opensuse-updates/2014-01/msg00049.html	Mailing List Third Party Advisory
http://marc.info/?l=bugtraq&m=141576815022399&w=2	Issue Tracking Third Party Advisory
http://openwall.com/lists/oss-security/2013/11/04/19	Mailing List Third Party Advisory
http://redmine.lighttpd.net/issues/2525	Issue Tracking Vendor Advisory
http://redmine.lighttpd.net/projects/lighttpd/repository/revisions/2913/diff/	Broken Link
https://www.debian.org/security/2013/dsa-2795	Third Party Advisory

URL

CVE-2013-4508

Public exploit references (Exploit-DB) for CVE-2013-4508

Exploit prediction scoring system (EPSS) score for CVE-2013-4508

Common vulnerability scoring system (CVSS) metrics for CVE-2013-4508

Weakness enumeration for CVE-2013-4508

OS Trackers for CVE-2013-4508

Affected software / configurations for CVE-2013-4508

References for CVE-2013-4508