liblwip0 2.1.2+dfsg1-4ubuntu0.1~esm1: liblwip0 2.1.2+dfsg1-4ubuntu0.1~esm1 for Ubuntu 20.04.3 LTS (focal)

liblwip0 2.1.2+dfsg1-4ubuntu0.1~esm1, released May 18, 2026, fixes 4 CVEs in liblwip0. None of them is reported as exploited. Patch Radar priority: High. The product is no longer supported.

HighUnsupported product

CVEs closed

None rated Critical

Exploited

None reported

Highest CVSS

9.8

Base score, 0 to 10

Highest EPSS

0.1993

97th percentile

Priority of the 4 CVEs

Patch now 0
                                Urgent 0
                                High 1
                                Routine 3

Fixed package versions

Product	Release	Fixed in
liblwip0	Ubuntu 20.04.3 LTS (focal)	2.1.2+dfsg1-4ubuntu0.1~esm1

CVEs this fix closes

Priority	CVE	Title	CVSS	EPSS	Exploitation
High	CVE-2020-8597	ppp: eap.c in pppd in ppp 2.4.2 through 2.4.8 has an rhostname buffer overflowin the eap_request and eap_response functions.	9.8	0.1993	None reported
Routine	CVE-2020-22283	liblwip0: A buffer overflow vulnerability in the icmp6_send_response_with_addrs_and_netif() function of Free Software Foundatio...	n/a	0.0140	None reported
Routine	CVE-2020-22284	liblwip0: A buffer overflow vulnerability in the zepif_linkoutput() function of Free Software Foundation lwIP git head version...	n/a	0.0121	None reported
Routine	CVE-2026-8836	lwip: A vulnerability was found in lwIP up to 2.2.1	n/a	0.0110	None reported

Also fixes CVE-2020-8597

ppp 2.4.7-2+4.1ubuntu5
ppp on Ubuntu 25.04 (plucky)
ppp 2.4.7-2+4.1ubuntu5
ppp on Ubuntu 24.10 (oracular)
ELSA-2020-0633
ppp, ppp-devel on ol 8
RHSA-2020:0633
network-scripts-ppp, ppp, ppp-devel on RHEL 8
ppp 2.4.7-2+2ubuntu1.2
ppp on Ubuntu 18.04.6 LTS (bionic)
ppp 2.4.7-2+4.1ubuntu5
ppp on Ubuntu 20.04.3 LTS (focal)

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