Detections
Analytics

Echo: zlib: security update to 1:1.3.dfsg+really1.3.1-1+e3zlib-1.2.11: security update to 1.2.11+e1zlib-1.3.1: security update to 1.3.1+e1zlib-1.3.2: security update to 1.3.2+e1

high Tenable Cloud Security Plugin ID 478416

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - zlib 1.2.11 through 1.3.2 contains a heap buffer overflow: after an underlying write() fails, gz_write()
 returns without resetting strm.next_in, leaving it pointed at the caller's buffer. A later gz* write call
 then derives a position from the stale pointer and writes past a heap allocation; any write() failure
 reaches it, including EPIPE on a blocking descriptor, and in versions before 1.3.1.2 the failed write must
 be followed by a gzclearerr() call. (CVE-2026-76844)

Solution

Update the zlib-1.2.11 library and its related packages to version 1.2.11+e1 or later.

See Also

https://advisory.echohq.com/cve/CVE-2026-76844

Plugin Details

Severity: High

ID: 478416

Version: Revision 1.1

Type: Local

Published: 11/5/2026

Updated: 11/5/2026

Risk Information

VPR

Risk Factor: Medium

Score: 4.3

Percentile: 53.52

CVSS v2

Risk Factor: High

Base Score: 7.1

Temporal Score: 5.3

Vector: CVSS2#AV:N/AC:H/Au:N/C:N/I:C/A:C

CVSS Score Source: CVE-2026-76844

CVSS v3

Risk Factor: High

Base Score: 7.4

Temporal Score: 6.4

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

CVSS v4

Risk Factor: High

Base Score: 8.3

Threat Score: 4.9

Threat Vector: CVSS:4.0/E:U

Vector: CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 10/15/2026

Vulnerability Publication Date: 8/24/2026

Reference Information

CVE: CVE-2026-76844