CVE-2016-8623

mediumpriority · track · 31EPSS 0.025 · 85 %ileDEEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

2.55% (85th) EPSS

CVSS 5 · medium

Is it mine?

4 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · cert_bund · nvd

EPSS · scored 2026-10-27

A flaw was found in curl before version 7.51.0. The way curl handles cookies permits other threads to trigger a use-after-free leading to information disclosure.

cvss

Technical severity, 0–10. One row per scoring source.

7.5

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–high · 3.3–7.5

v2.05mediumAV:N/AC:L/Au:N/C:P/I:N/A:Nprimary · NVD / NIST USexploitability 10 · impact 2.9

v3.07.5highCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:Nprimary · NVD / NIST USexploitability 3.9 · impact 3.6

v3.03.3lowCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:Nsecondary · ENISA EU

v3.03.3lowCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:Nsecondary · secalert@redhat.com USexploitability 1.8 · impact 1.4

v3.06.9mediumCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-416US

affected products (4)

Products and version ranges known to be affected.

Dell Data Protection Advisor <19.12 SP2all versionscert_bundDE
Dell Data Protection Advisor< 19.12 SP2cert_bundDE
The Curl Project curl≤ 7.51.0enisa_euvdEU
haxx curl< 7.51.0nvdUScpe:2.3:a:haxx:curl:*:*:*:*:*:*:*:*

advisories (3)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2023-1652cURL: Mehrere SchwachstellenDeutsch2016-11-02csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in cURL ausnutzen, um das System zum Absturz zu bringen, um Informationen aus den Cookies offenzulegen, um dem Benutzer falsche Informationen darzustellen und sich als ein Benutzer auszugeben.
WID-SEC-W-2026-0180Dell Data Protection Advisor: Mehrere SchwachstellenDeutsch2026-01-20csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Dell Data Protection Advisor ausnutzen, um beliebigen Code auszuführen, einen Denial-of-Service-Zustand zu erzeugen, Sicherheitsmaßnahmen zu umgehen und nicht näher spezifizierte Angriffe zu starten.
CURL-CVE-2016-8623Use after free via shared cookies2016-11-02vendor · osvUS
libcurl explicitly allows users to share cookies between multiple easy handles that are concurrently employed by different threads. When cookies to be sent to a server are collected, the matching function collects all cookies to send and the cookie lock is released immediately afterwards. That function however only returns a list with *references* back to the original strings for name, value, path and so on. Therefore, if another thread quickly takes the lock and frees one of the original cookie structs together with its strings, a use after free can occur and lead to information disclosure. Another thread can also replace the contents of the cookies from separate HTTP responses or API calls.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cert_bund nvd osv NVD CVE.org MITRE

published 2018-08-01modified 2026-06-17

references (37)

External citations — patches, advisories, analysis.

scry

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