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Fencer Vulns
high 7.5

CVE-2022-27775 json

An information disclosure vulnerability exists in curl 7.65.0 to 7.82.0 are vulnerable that by using an IPv6 address that was in the connec…

published 2022-06-01 4 y ago modified 2026-10-14 25 d ago also EUVD-2022-32271 , JLSEC-2026-387

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
3.3%
EPSS 3.3% chance of exploitation in 30 days, percentile 88%
public exploits
0
none known

Summary

An information disclosure vulnerability exists in curl 7.65.0 to 7.82.0 are vulnerable that by using an IPv6 address that was in the connection pool but with a different zone id it could reuse a connection instead.

Patch / fix

  • julia CURL_jll 8.5.0+0
  • julia LibCURL_jll 7.83.1+0
  • Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP V3.1.5
  • Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP V3.1.5
  • Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP V3.1.5
  • curl Debian 14, Debian 13, Debian 12 7.83.0-1

debian advisories DEBIAN-CVE-2022-27775

  • curl Ubuntu 20.04 LTS 7.68.0-1ubuntu2.10
  • curl Ubuntu 22.04 LTS 7.81.0-1ubuntu1.1

ubuntu advisories UBUNTU-CVE-2022-27775

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • curl RHEL 9 7.76.1-19.el9
  • libcurl RHEL 9 7.76.1-19.el9
  • curl-minimal RHEL 9 7.76.1-19.el9
  • libcurl-minimal RHEL 9 7.76.1-19.el9

red hat advisories RHSA-2022:8299

  • curl SLE Module for Basesystem 15 SP3, SLE Micro 5.2, SLE Micro 5.1 +1 more 7.66.0-150200.4.30.1

suse advisories SUSE-SU-2022:1657-1

  • curl openSUSE Tumbleweed 7.83.0-1.1

opensuse advisories openSUSE-SU-2024:12028-1

  • curl AlmaLinux 9 7.76.1-19.el9
  • libcurl AlmaLinux 9 7.76.1-19.el9
  • curl-minimal AlmaLinux 9 7.76.1-19.el9
  • libcurl-minimal AlmaLinux 9 7.76.1-19.el9

almalinux advisories ALSA-2022:8299

  • curl Rocky Linux 9 7.76.1-19.el9_1.1

rocky linux advisories RLSA-2022:8299

  • curl Alpine 3.14, Alpine 3.13, Alpine 3.12 7.79.1-r1
  • curl Alpine 3.15 7.80.0-r1
  • curl Alpine 3.24, Alpine 3.23, Alpine 3.22 +6 more 7.83.0-r0

alpine advisories ALPINE-CVE-2022-27775

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • curl Arch Linux 7.83.0-1

arch linux advisories AVG-2685

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2022-27775 updated cvss 7.5

curl: bad local IPv6 connection reuse

  • Red Hat Enterprise Linux AppStream (v. 9) libcurl-devel 7.76.1-19.el9, curl-debuginfo 7.76.1-19.el9, curl-debugsource 7.76.1-19.el9, libcurl-debuginfo 7.76.1-19.el9, curl-minimal-debuginfo 7.76.1-19.el9, libcurl-minimal-debuginfo 7.76.1-19.el9 Red Hat Enterprise Linux BaseOS (v. 9) curl 7.76.1-19.el9, libcurl 7.76.1-19.el9, curl-minimal 7.76.1-19.el9, libcurl-minimal 7.76.1-19.el9
    fixed: vendor fix RHSA-2022:8299
  • Red Hat .NET Core 3.1 on Red Hat Enterprise Linux rh-dotnet31-curl, rh-dotnet31-libcurl Red Hat Enterprise Linux 6 curl, libcurl Red Hat Enterprise Linux 7 curl, libcurl Red Hat Enterprise Linux 8 curl, libcurl, libcurl-minimal Red Hat JBoss Core Services jbcs-httpd24-curl jbcs-httpd24-curl Red Hat Software Collections httpd24-curl, httpd24-libcurl
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

cisa ICSA-23-348-10 updated cvss 7.5

Siemens SIMATIC S7-1500

  • Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0) >= 3.1.0, < 3.1.5 Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0) >= 3.1.0, < 3.1.5 Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0) >= 3.1.0, < 3.1.5 Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0) >= 3.1.0, < 3.1.5 Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0) >= 3.1.0, < 3.1.5
    affected: fixed in V3.1.5, mitigation support.industry.siemens.com

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

CISA SSVC

Exploitation
Proof of concept is public
Automatable
yes
Technical impact
partial
Assessed
17 mo ago

Exploit prediction

3.34% chance of exploitation in the next 30 days, higher than 88% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • hackerone.com https://hackerone.com/reports/1546268 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CISA ADP 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:P/I:N/A:N
OSV 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected packages

ecosystem package affected fixed in
julia CURL_jll
<8.5.0+0
8.5.0+0
julia LibCURL_jll
<7.83.1+0
7.83.1+0

Affected products

  • n/a https://github.com/curl/curl
  • Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP
  • Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP
  • Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP

Classification

Weakness
  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Improve version ranges to indicate fix.